I.MADRAS CHRISTIAN COLLEGE AUTONOMOUSB.Sc DEGREE EXAMINATIONS -NOv 2012

ALLIED COTJRSE FOR MATIIEMATICS -1081PY1AOL - ?HVSZCs FoR, rylftT,+S-f.

SEMESTER_Io b l r t f t N- -

l ' r

TIME :3 HOURS

Answer ALL questions :

l. .ued is the expression for moment of inertia of a rigid body. Give the unit.2. Give two uses of satellities .3.. Define bulk modulus of elasticity.4.. What is a cantilever ?5. State Lenzlaw of induction.6. What is meant by resonance in electrical circuits?J. _G_i_ve the postulates of special theory of relativity.8 What is meant by time dilation.9.. Give the unit of coefficient of thermal conductivitv.10 What is a black body?

PART _B

Answer All'Y FM questions : 5X8:40MARKS

1l' Define radius of gyration . Derive an expression for the moment of inertia of a solidsphere 2+6 marks

12. Explain orbital velocity and escape velocity. 4marksUsing the expression for escape velocity calculate the value of escape velocity on theearth. 4marks

13. What are geostationary satellites? 3marksWrite a note on Indian Satellites 5marks

14' Assuming q9 expression for_bending moment arrive at an expression for the young ,smodulus of the material of a beam subjected to uniform bending. 2+6marks

15. What is induced e.m.f ? E$pt".t,- i"to,Aartt j-r,>. ilnrarks

Give one application of induced emf _16. Explain with the necessary diagram how the figure of merit of a B.G.

determined. (2+6marls)

PART _ANIAX: MARKS 100

2Xl0:20MARKS

2 markscan be

17. Give the Lorentz transformation equations. 4marksGive Einstein's mass energy relation and explain the term equivalence. 2markscalculate the energy equivalent in Joules of t tg mass . 2marks

18. Define coefficient of thermal conductivity lmarkExplain the blackbody spectrum. 3marksHence discuss the distribution of energy in the black body spectrum. 4marks

Q:-o)

- ) - -

PART{AnswerAI\"Y TWO questions :

19.Define the three modulii of elasticity.Derive an expression for the couple ier unit twist on a rod.How will you determine the rigidity modulus of a wire bytorsional oscillations.

2X2(F4OMARKS

4marks6marks

setting it inl0marks

4marks6marks2marksSmarks

'1,'fnarksSltrarks

12rnarks

20. Explain self induction.Explain the growth of charge in a LC circuit .Draw aphasor diagram for a LCR circuit.Derive an expression for the frequency of oscillations in a LCR circuit.

21. State ' Stefan's law of radiation .Explain Planck's law of radiation.9$"g the concept of quantum theory of radiation deriveWien's displacement law and Rayleigh Jean,s law.

l ' l l ' r l l t l t l l t l l r t l t l l t r l l l r t ! r r r r l r l t t t t t l r t r t t r t r r r t r r r t r t l t r r r t r r t r r r r r t r t

MADRAS CHRTSTTAN COLLEGE (AUTONOMOUS)

If.se- DllGREu ttND oF SITMESTER ExAMINAt'IoNs _ Novembe rzol2

TITLE OF THE PAPER:

' l ' lMF l :3H I tS

r 5 J r r O NS E M : O N E

SECTION - A

Answcr ALL thc qucstions:

l. Define critical temperature.2. State two observations of porous plug experiment.3. Definesuperconductivity.4. State Rayleigh-Jean's law.5. What do you mean by most probable velocitv?6. Define entropy.7. What is a heat engine?8. Define macroscopic system.9. -Discuss briefly the effect of pressure on boiling point.I0. State the latent heat equation.

I

l

i

Answcr ANY FIVE qucstions::I

I

I l ' Doscribe Amagat's experiment with neat diagiram and discuss its results.l2' cdlculaie ilre critical lernperuture, critical pressure and critical volurnc of 02, givcrr iirar ': i t . l3g pa m.r mol-r an<l h : 31.9 cm3 rnoi- ' ---

'.,,t];I[.rljJ'j;l,ll"'" erect' Describe with near diagram the Linde,s process ,r-l4' obtai'tr'expressio' f'r ter'perature of i'versi'^ for gases.15. State and explain Wien's law and planck,s law.16. a) Writc a notc on adiabatic dcmagnc tization.

,. .o],3tr"uss the applications of Maxweil's thermodynamicar relationsl /. rlscuss tne change in entropy in a perfect gas.

l8' Describe the experimental verification oril**,in's verocity distribution function.

SECTION - B

MAX. MAITKS: t (X )

( 1 0 x 2 * 2 0 )

( 5 x 8 , . - 4 0 )

(u-";

- z

SECTION - C

Answer ARIY TWO questions:

19. a) obtain the van der waal's equation of state for gases and explainAIso'uili'e the drawbacks of van cler waal's equati.'.b) Discuss thc pcculiar lcaturcs of t.lclium ll.

* * * * * * * *

( 2 x 2 0 - 4 f i 1

the COz isothermals.

20' a) Explain the experimental determination of thermal conductivity by Forbe,s method.b) with the necessary diagram, explain the working of otto engine.

2l' a)Derive the Clausius Clapeyron latent heat equation for first order phase change.b) Deri ve Max wel I - Boltzmann di stribution law.

MADRASCHRISTIA}{COLLEGE(AUTONOMOUS)B.SC. DEGREE END OF SEMESTER EXAMINATIONS _NOV 2OT2

GrouP (iii) PHYSICS

06 IT1 ANMECHANICS AND PROPERTIES OF MATTER

TIME : 3 HOURS SEMESTER: TWO MAX : 100 marks

PART _ A

Answer ALL the questions. [ 1 0 x 2 : 2 0 ]

1. What is Cantilever? What do you mean by depression?

2. What are the limiting values of poisson's ratio?

3. State D'Alembert's PrinciPle.4. Give some of the applications of viscoslty'5. Define Co - efficient of viscosity of a liquid'

6. Define Meta - Centre.7. Define Critical Velocity and give its expression'8. Define the couple per unit twist of a cylinder'9. Define surfaceTension. Give its units and dimensions.

1 0. Define Gravitational field and Gravitational potential.PART _ B

Answer any FIVE questions.

11. Derive an expression for the bending moment'

[ 5 x 8 : 4 0 ]

12. Find the location of the centre of gravity of a solid tetrahedron.

13. Describe with theory the Jaegar's method of determining the surface

tension of a liquid.

14. Describe the working of Mc - Leod gauge pump for measuring low

pressure.

15. Derive an expression for the loss of kinetic energy between two

spheres during their direct impact.

16. Derive an expression for the Range of a projectile on an inclined

Plane' continued in Page 2

Page 2

B.sc.(iii) Mechanics & Properties of Matter....

17. With aneatdiagram explain the working of the ostwald'sViscometer.

18. Derive an expression for Gravitational potential due to SphericalShell at the point(i) On the surface (ii) Inside the Shell

PART _ CAnswer any TWO questions. 12x20:40 l

19. Describe Quincke's method for finding Surface Tension. Derive theformula employed.

20. DeriveLagrange's Equation of motion from D'Alembert's principle'

21. Describe with theory, how the rigidity modulus of a wire can bedetermined using a torsional pendulum.

* t(,f rl. * * *.

MADRAS CHRISTIAN COLLEGE (AUTONOMOUS)B.Sc. DEGREE END oF SEMESTER EXAMINATIONS - Nov 2012

12 / 11 FN Group (iiD PHYSICS

ELECTRICITY & ELECTROMAGNETISM

TIME : 3 HOURS SEMESTER: THREE

PART. AAnswer ALL the questions.[10x 2= 20]

1. What is meant by an equipotential surface? Give an example.2. lf a capacitor of 20 prF is charged to 6 V how much charge does it store?3. Define electrical resistance in terms of conductivity.4. State Biot Savart law in vector form.5. What is the essential principle of a moving coil galvanometer?6. State Faraday's laws of induction.7. Two capacitors, each of BpF, are connected in series. What is therr effective

capacitance?8. Define the time constant for transient current growth in an inductive circuit?9. Give the formula for frequency at resonance in a LCR circuit. Explain the symbols.10. What is Displacement current?

PART. BAnswer any FIVE questions. [5x8 = 40]

11. Derive Coulomb's law.I

12' Derive fhe capacitance of a parallel plate capacitor with the help of a diagram. (2+6)

13. State apd prove Ampere's circuital theorem. (2+6) i

14. Discus$ the lheory of the cyclotron and explain its working. (4+4)

neter current in a slightlyunbalanced Whbatstone's network. ;

19 DefinejMutual.Inductance between a pair of coils and the unit for mutual inducrance.urscuss thq coetficient of coupling. (4+4)

17' Derive the formula for power used in an A.C. circuit. Explain the terms power factorand watt-legs current. (6+2) ,

lB' Define I and explain the Poynting.vglpr . Calculate the velocity of an electromagneticwave in free space given its OermeaOititfi6permittivity, @+a)

PART- CAnswer any TWO questions [2x20 = 40 mark6] |

19' Discuss the relationship b'etween field and potential. Derive the potential and the fieldof a long line of charge using the relationship between poteniiai and fietd. (5+10+5)

20' . State and prove Gauss' law in Electrostatics. Apply it to obtain the field outside andinside a spheric,al charge distribution. Represent the results graphically. (5+10+5)

21' Discuss the decay of a transient charge in a series circurt containing inductance,capacitance and resistance. Hence derive th6 logarithmic oeciement of the circuit. (15+5)

MAX : 100 marks

1 2 / I I

TINlE

PART. AAnswer ALL th€ questions.ll0x 2= 20]

What rs rea-: n- a- eq- potential surface? Give an example.lf a capacrtor c' 4 i;F ,s charged to 6 v how much charge does it store?Define elecir,ca .esgance In terms of conductivity.State Bio: Saral .a* . vector form.what rs the ess€.:a p.rncrple of a moving coil galvanometer?State Faracays a*s c' nduction. iTwo capacr:o's e&:' cf 8pF, are connected in series. What is their effectivecaoacitance)Define:ne : - e =-sa^: for transient current growth in an inductive circuit? .Give the lor - a f; trequency ai resonance in a LCR circuit. Explain the symbols.What rs Dr$, a:erent current? I

\!ADR{S CHzuSTTAN COLLEGE (AUTONOMOUS)B-Sc. DEGREE E\D oF SEMESTER EXAMINATIONS - Nov zotz

Group (iii) PFIYSICSF\

E L ECTRICITY & ELECTROMAGNETISM

: i HOL'RS SEMESTER: THREE MAX : 100 marks

1 .2.5 .

4 .q

t'.

1 0

PART. BAnswer ani RVe qr.rcsiions. [5x8 = 40]

1 1 . D e . , . e * - c - : s a w

12 3e''.e i'e :arclatrce of a parallel plate capacitor with the help of a diagram. (2+6)

13 S:a:e arc ir:ie a.-pere's circuitaitheorem. (2+6)

14 Drr-ss r€ r€cry c rhe cyclotron and explain its working. (4+4)

15 S:a:e {:c^rrcps arws Use them to find ltr,"' g"tu"nometer current in a slighgyunbarced '.rrb€e3siar€ s n"twork.

16' Define r.l-:'a l€-darce between a pair of coils and the unit for mutual inductance.Discuss tne cce-c€!^r C co.lptrng. (4+4)

17' Derrve i-€'3r- ' :3' : ' power used in an A.C. circuit. Explain the terms power factorand wan-,ess :"r€t *?

l B De' -e a-c €rea,. :'e roynting vqggf . Calculate the velocity oJ an electromagneticwave..'.ee sca€ i\€. ..s oermeabilitfrGpermittivity, (4+4)

PART. CAnswer any TWO qucstions 12x20 = 40 marksl

19 I r-ss :-e 'e€tcrs- I Setween field and potential. Derive the potential and the fieldof a 3-3 -€ :' r€.!€ -s.g the relationship between pot"nti"i and field. (5+10+5)

2' S:a:e a'': :r:.e 33-ss 'aw in Electrostatics. Apply it to obtain the field outside and-s :e a SJ'-€-,r.i. :. T;2 r s':cution Represent the results graphically. tsir o.sj-

2' I s:-ss i-€ Ja3€1 :' a lransient charge in a series circuit containing inducrance,cat'zt:a-':e a-c 'sssa-ce ience derive the logarithmic decrement of the circuit. (15+5)

MADRAS CHRISTIAN COLLEGE (AUTONOMOUS)B.Sc. DEGREE END oF SEMESTER EXAMINATTONS _Nov 2012

22 t11 ANGroup (i)

PHYSICS FOR MATT{EMATICS _ I

TIME : 3 HOURS SEMESTER : THREE MAx : 100 marks

PART _ AAnswer ALL the questions.

1. Give an expression for rotational kinetic2. What is a geostationary satellite?3. Define Poisson,s ratio.4. Mention one application of cantilevers.

[ 1 0 x 2 : 2 0 ]

energy of a rigid body.

expression for escape1 2 + 6 l

13. Derive a relation for the twisting couple on a rod.

14. Explain Melde's string experiment to determine the frequency of atuning fork.

induction. Explain self

l 4 + 4 1

Conlirrued in page 2

l. How can you demonstrate Lissajou, figures?6. Give the expression for the frequency of vibration in a stretched

spring.7. Explain displacement current.

! 9iu" one application of resonance in electricar circuits.9. Give the characteristics of an operational amplifier.10. State De Morgan's theorem.

PART _ BAnswer any FIVE questions.

1 1. Derive an expression for the moment of inertiaabout an axis through its center.

12. Define gravitational potential. Hence derive anvelocity.

15. State the laws of electromagneticinduction. Give the unit.

[ 5 x 8 :

of a hollow

401

sphere,

Page 2

B.Sc.(i) Physics for Maths I ...

16. Describe the working of a Opamp based integrator and differentiatorcircuits.

17. What is an LC circuit? Explain how an LC circuit can be used todetermine the frequency of a signal in a radio receiver.

18. Discuss the working of JK flip flop.PART _ C

Answer any TWO questions.

19. (a) State Newton's law of gravitation and Kepler's law of planetarymotl0n. [ 3 + 3 ]

(b) Explain with a diagram Boy's method to determine G. [ 10 ]

12 x20 : 40 l

(c) Give the unit of G and g.

20. (a) What is Simple harmonic motion?

2I. (a) Explain displacement current.

(b) Derive Maxwell's equations in free space.

(c) Hence derive the wave equation.

(b) Discuss the composition of two SHM'S at right angles to eachother with a period 1 :2.

(c) Hence trace the Lissajou's figures.

1 2 + 2 l

l 4 )

[ 1 0 ]

t 6 l

t 4 l

[1 0]

t 6 l

MADRAS CHRISTIAN COLLEGE (Autonorgrousl

B.ScDEGREEE>(AI|IINATIoN.NoVEMBER2oL2

I PHYSICS FoR CHEMISTRY - II (O81Pr4Ao1lI ' j r r A N J

i -sern :B Max. Marks: 1ooTime: 3 Hrs,

SEICTIOT{ . A

Answer all questions:' ( 1 O X 2 = 2 O m a r k s )

1. Specify the two distinct features of vector atom model.

2. What are hard and soft X-ra.Ys?3. Determine the de-Broglie wavelength that is associated'*'ith a particle of

mass 1 gram moving with a velocity of 2000 m/s'

4. Dehne specific rotation for an optically active substance.

5. What is the necessary condition for a moiecule to be microrn'ave active?

6. State the basic requirements for LASER action?

7. What are magic numbers? What do they signify?

8. What is a chain reaction in nuclear fission?

9. What is the function of a transducer?i0. Sketch the V-I characteristics of a photodiode

SECTION - B

Answer any FIVE questions: ( 5 X 8 = 4 0 m a r k s |

1 i. Calculare the waveiength separation between the two component irnes

which are observed in the normal Zeeman effect. The magnetic field

used is 0.4 weber/m2, the specific charge is 1.76 x 1011 C/Kg and

waveiength is 6000 A.U.12. Calculate the minimum ener$/ permitted for an electrcn in a box 1 A.U

wide. Also compute the values of energr for the levels n:2 and 3. (Given

the mass of an electron is 9.1 X l0-3I Kg).

13. Expiain the principle of NMR. Mention any tr,vo applications.

14. Erplain the working of Helium-Neon Laser.

i5. Deduce Einstein 's mass- energrr eql i ivalence.

16. t rxolain the l ior-r id drop model of the nucleus.

- z -

17. Write a short note on optocouplers.18. Expiain the action of a photovoltaic cell.

SE'CTION - CAnswer any TWO questions: 12 X 20 = 4O marksf

19. a) Describe the vector atom model and explain the various quantum

numbers associated with it.b) With a neat diagram, explain the construction and working of a Ruby

Laser.

2O. State the postulates of wave mechanics. Deduce Schrodinger's

independent equation-for a particle.

21. a) Describe the construction and working of a cyclotron. Discuss its

limitations.b) Distinguish between Raman and IR spectra.

time

MADRAS CHRISTIAN COLLEGE (AUTONOMOUS)B;Sc. DEGREE END oF SEMESTER EXAMINATTONS -Nov 20rz

i

A III1 ANGroup (iii) PHYSICS

i

.PART _ A

MAX : 1.00 marks

[ 1 0 x 2 : 2 0 ]

WAVE PHYSICS AND MATHEMATICAL METHODS

TIME : 3 HOURS SEMESTER: FoURi:I

Answer ALL the questions.i

1r Write the equation of simple harmonic motion.2.. What is meant by resonance?3i. What is a progressive wave?4!b What are nodes and antinodes?5f State Doppler effect in sound.6l What are Dirichlet,s condition?7L Define absorption coefficient.

!l D"n". Shifting operator (E) and,differential operator (D).

9i What is the drawback of bisection method?1 p. State Trape:zoidal rule.

i pARr_BAnsfuer any FIVE Questions. t 5 x g :40 l

I

111. Shorv that the projection of uniform circular motion of a particlei gives a SHM.I! ,

1P. Perive

Newton's formula for velocity of longitudinal waves in gas.r Apply Laplace correction.i!

ls.Discuss the harmonics produced in a closed organ pipe.I

1{. What are the factors affecting acoustics in an auditorium. How arethey set right?

l5.what is a factorial polynomial. Find the r,h difference of x(').^ 2

16. Prove that (1-; x3 = 6x

Continued in Page 2

i page 2

B.So.(iii) Wave Physics and Mathematical Methods.....

17. Describe Melde's string experiment to detennine frequency of rod.

18. Derive one dimensional wave equation.

PAIIT * CAnswer any TWO questions. 1 2 x 2 0 : 4 0 1

19. Obtain the expression for velocity of longitudinal wave in a medium.Describe how velocity of sound in a rod is deter-ined using Kundt,stube apparatus.

what are ultrasonic waves? Describe the production and detection ofultrasonic waves.

(a) Find by Newton - Raphson method the real root of the equation3 x - C o s x - l = 0

(b) Obtain a Fourier series for /(x) = *2 tobe valid in the interval- t r t o t .

* * * * * { . * * * r t

24.iII

2 t .

i' ':I

MADRAS CHRISTIAN COLLEGE (Autonomous)

D nD K DEGREE EXAMINATION . { - i l e 4

Group / Branch .....

TITLE OF THE PAPER'A&c&:) * Deto' cl\ .

L rc Marks:

Ivlarks :

PATTI'- A

furswer al l quostions (10x2: ?.0)

l. How does boiling point vary with pressure?

2. What are heat engines?

3. Define resolutiou.

4. What is meant by .. .-iltrasonic wave?

5 What is plroto electricity?

6. Wha.t a'e X- rays?

7. D,:firre escape velocity.

8. Whd ale geo stationary satellites?

9. Distinguish between Nuclear fission and fusion.10. What is a CD? It4ention the t-vpes of CD.

PARI' - B

Ansrver any l':1VE qucstions (5x8 : 40)

1 1. Give th,.' comirtu'isort between anOtto eugine with a Diesel engine.

12. Describe the working principle of a refi'igerator.

13. What are the ap4llications of Doppler effect?

14. Explain thc: r,vorking principle of an electr'otr nticroscc.;re.

15. I)escri lre a DC fan.

16. Eriplain the working of a BP monitot'.

17. Write a nole on Indian satel l i tes.,l8.

L)':scribe a photo voltaic cell.

PARI'- Cl

Answer au,'f WO questions.( 2x20 : 40)

i9. a) Dcscritirr ths u'o;Jiing cf Petrc! crrmbrtstiotr cnqine.

b) \\rhat is long sight and short sight? Florv are the.v rectilied?

20. a) Dcscrit're the worliing ptinciple of a Xero:x machinc.

b) Write a note on \{RI scan.

21. a) Writc a uote on cell phone commtrnication

h\ l-)r 'qeri hrr f 'ncl ' ( 'v r-rrndrrel inn f i 'onr wirrd

2012-

Time:

lnstructions :

6 lt t ft'\/Q . N o .

Hours ,llgu* Semester , k ud

MADRASCHRISTIANCOLLEGE(AUTONOMOUS)B.SC. DEGREE END OF SEMESTER EXAMINATIONS - NOV 2OI2

0 8 / 1 1 F NGroup (iii) PHYSICS

ATOMIC PHYSICS

TIME, : 3 HOLIRS SEME'STER : FIVE' MAX : 100 marks

PART _ A

Answer ALL the questions. [ 1 0 x 2 : 2 0 )

1. State the principle of Aston's method of finding e/m of a positive ion'

2. Explain the action of a velocity seledtor'

3, V/hat is Bohr radius? Give its numerical value'.4.' S,rate MoseleY's law.S. iVttut is meant by Coherent Scaftering?

6. What are CouPling Schemes?7. State Pauli's exclusion principle'

B. Sketch the pole pieces used in Stern and Gerlach's experiment to

produce a non - homogenous magnetic field'-.g.

^Give the electron configuration of Copper (29) and Oxygen(8)'

10. Distinguish between zeemaneffect and Stark effect.PART _ B

Answer anY FIVE, questions.

11. Explain how the parabolic t,rages in Thomson's parabolic method are

unulysed to find the unknown mass of a positive ion.

12. Distinguish between excitation and ionization potentials of a gas'

Also calculhte the ionization potential for the hydrogen atom and

express it in eV.13. Discuss in detail the continuous spectrum for a tungsten target at

various tube Potentials.

14. Describe the vector atom model and hence explain the different

quantum numbers associated with it to describe an electron. Explain

spatial Quantization.

15. What are alkai elements, Halogens, Lanthanides and Actinieds? List

out the inert gases' continuecl in page 2

[ 5 x 8 : 4 0 ]

Page 2B.Sc.( i i i ) Atomic Physics. . . . . . .

16. Calculate the wavelength separation between the two componentlines which are observed in the normal Zeeman effect. The magneticfield used is 0.4 weber/m2, the specific charge of the electron : 1.76 x10rr Coul / kg and l" : 6000A.

17. Discuss Pasch-en - Back effect on the basis of Vector atom model.

18. An electron accelerated by a potential of 50000V enters a uniformmagnetic field of 2 x 10

- 2 weber/m' perpendicular to its direction ofmotion. Calculate the radius of the path of the electron.

PART _ CAnswer any TWO questions.

19. (a) What is Compton Scattering?

1 2 x 2 0 : 4 0 l

(b) With necessary diagram, explanation and theory, obtain anexpression for the change in wavelength due to Comptons c a t t e r i n g

t 2 + r g : 2 0 ]

20. (a) State Bohn's postulates.

(b) Describe Bohn model of the hydrogen atom and hence deriveexpressions for the

(i) velocity of the electron in the nth orbit.(ii) Frequency of rotation of the electron in tl're nth orbit.(iii) Eneigy associated with the electron in the nth orbit.(iv) Frequency of Spectal lines of the hydrogen atom.

(c) Indicate the various series using an energy level diagram.

[ 3 + 1 2 + s j21. (a) Derive an expression for Lande's splitting factor.

(b) Give the quantum mechanical explanation of anomalous Zeemaneffect and hence discuss the splitting of the Sodiurn D lines.

{ < : f t : $ * { . * * { . [ 4 + 1 6 ]

MADRAS CHRISTIAN COLLEGE (AUTONOMOUS)B.SC. DE,GREE END OF SEMESTER EXAMINATIONS - NOV 2OI2

GE,NERAL ELECTIVE1 6 I T l F N

ENERGY PHYSICS

TIME : 3 HOURS SEMESTER: FIVE MAX : 100 marks

PART _ A

Answer ALL the questions. [ 10 x 2:201

1. Define unit of energy.2. Define efficiencY of a device.3. What is meant bY hYdroPower?4. What is meant bY Watt - Hour?5. Give any two applications of solar energy'

6. What is meant bY Bio - mass energY?

7 . Give the composition of gobar gas.

8. What is wind energY?9. Give any two properties of deep water waves'

10. What is the principle of working of nuclear reactor?PART _ B

Answer any FIVE questions.1 1. List and explain energy sources.

[ 5 x 8 : 4 0 ]

12. Give the statistical details of coal, oil and natural gas.

13. Explain how hydropower can be converted into electricity.

14. What are the components of solar energy. Define solar constant.

15. Discuss energy farming. Mention the merits and demerits of energy

farming.

16. Explain the working of a vertical axis and wind turbine.

17 . Draw a block diagram of a nuclear reactor and name the parts.

18. Discuss in detail the various types of storage.Continued in Page 2

Page 2

B.Sc.(iii) Energy Physics (GE) . . ..

PART _ C

Answer any TWO questions. 12 x20: 40 l

19. (a) Explain renewable and conventional energy systems.

(b) Explain the working of a Pelton wheel impulse turbine.

t 8 l

lLzl

20. (a)Discuss the construction and working of solar cooker. [ 10 ]

(b) what is geothermal energy? Explain how energy can be tapped

fromhotdryrockresources. [ 2 + 8]

2L (a)Explain the Rankine's cycle used in oTEc system. [ 10 ]

(b) Compare nuclear fission and nuclear fusion reactions. Explain

the solar energy as a consequences of fusion reactions. | 4 +6]

:1. t * {c tl€ tl.,1. {. {.,F tl.

MADRAS CHRISTIAN COLLEGE (AUTONOMOUS)B.sc. DEGREE END oF SEMESTER EXAMINATIONS -Nov z0rz

Group (iii) PHYSICS1 4 l l l F N

QUANTUM MECHANICS & RELATIVITY

TIME : 3 HOURS SEMESTER: FIVE MAX : 100 marks

[ 1 0 x 2 : 2 0 ]PART _ A

Answer ALL the questions.

l. What is photoelectric effect?2. State Heisenberg's uncertainty principle.3. How do you interpret the wavefunction in quantum mechanics?4. What do you,mean by an operator?5. Write down Schrcidinger wave equation applicable to a particle in the

potential barrier regi'on of height Vo.6. What is a rigid rotator?.7. What do you understand by eigen value?8. Distinguish betrveen 'inertial' and 'non - inertial' frames of reference.9. What is time dilation?1O.Write Einstein's mass - energy relation.

, PART_BAnsweranyFIVEquest ions . 4 [5xg=40J

I lr. what voltage mu;t be applied to an electron microscope to produce, efe1,tro4,s of wavelength 0.50".4'?[ g i . i e n s : 1 . 6 x l 0 - " C ; m : 9 x l 0 - 3 r K g ; h = 6 . 6 2 x [ 0 - 3 4 J s 1

12. Describe Millikan's experiment to determine Planck's constant.i -

t:. what is meant by Hermitian operator? show that Hermitianoperators havp real eigen values.

14. Show that lL*,Lrl1tthL, and [L*I?] = 0 . 1 4 + 4 1

15. write down Schrddinger's wave equation for a particle in a box.Solve it to obtain eigen functiohs.r

-

Continued in page 2

Page 2

B.Sc.(iii) Quantum Mechanics & Relativity....

16. Explain addition of velocities in terms of hyperbolic functions intheory of relativity.

17. Derive Lorentz transformation equations from the postulates ofspecial theory of relativity.

18. State and explain the principle of equivalence.

PART _ CAnswer any TWO questions. 12 x20 : 40 l

19. (a) What is meant by phase velocity and group velocity? Show thatfor a non,- relativistic free particle the phase velocity is half ofthe group velocity. 1 2 + 2 + 8 1

(b) Discuss the fundamental postulates of quantum mechanics.t 8 l

What is harmbnic oscillator? Obtain the eigen values ofone - dimensional linear harmonic oscillator using quantummechanicsapproach. [2+ 18

(a) Describe Michelson - Mosley experiment and obtain an

I ,:*t-r.rsion for.the shift in fringes. , ll2l

(b) Obtain an expression for the ielativistic addition of velocities.t 8 l

rl. * * :1. {. rN. tl6 * * *

ADBSc DEGREESEMESTER

ELE

IAN TEXAMINATION,NOVEMBER,2012s -obf rr FIV

Time: 3hours Semester V Mox: .l00 Morks

P A R T - A [ l O x 2 = 2 0 1[Note: Answer A[[ Quesiions ; Eoch question conies TWo morks]

l. Whot is the necessity for Biosing on omplif ier?2. Define 'Operoting Point' of on omplif ier.3. List ony two differences between BJT & JFET.4. Define ' lntrinsic stond of rotio' of o UJT.5. Define 'ripple foctor' of o rectifier.6. Given thot the oc input frequency=SOHz, whoi is the Output frequency of

i) on Holf wove rectif ier ond ii) o Fullwove rectif ier.?7. Whot is second hormonic distortion?8. Mention ony two effects of Negotive Feedbock on Voltoge omplifiers.9. Drqw the circuit of o Reloxoiion oscillotor using UJT.10. whoi is the ottenuotion produced in o phose shift network?

P A R T - B [ 5 x 8 = 4 0 1[Note: Answer ANY FlvE Questions ; Eoch ques'fion corries EIGHT morks]

I l. Drow the circuit ond exploin ihe working of o poientiol-Divider Bios.12. whqt is o Lood line? construct o dc lood line qnd on oc lood line for o

tronsisior. Exploin why oc lood line is steeper thon dc lood line?.l3. Whot is rote effect? Exploin why the gote of o SCR looses control once theSCR is triggered ON?

14. Exploin i) the formotion of o wedge shoped Depletion region inside thechonnel ond ii) the self pinching off ociion - in o JFET.

15. Exploin the Zener breok down mechonism. Whot is the effect of temperoiureon the Zener breokdown voltoge?.l5. Drow the circuit of o closs B push-pull omplif ier. Exploin its working.

I Z. Drow the circuii of o Dorlington omplif ier ond exploin its significonce.,l8. Drqw the circuit of on Astoble Multivibrotor using Tronsistor. Exploin its working.

P A R T - C 1 2 x 2 0 = 4 0 l[Noie: Answer ANY TWO Questions ; Eoch question corries TWENTY morks]

19' Exploin the construction & working of o Full wove Bridge rectif ier with Zenerregulotion. Exploin how the voltoge reguloliql i5 ochieved in thot circuit.

20. Describe the construction feotures of otlPtfiUSFET. Discuss the mechonism ofcurrent f low through its chonnel in both fioues of operotion.

2l.List the conditions for sustoined oscil lotions. Drow the circuit of ony one of the,,..ti!g.y.1u.? o.scillotors .119,".f.rg,i'] it:.ygllilg;.?pjgirl g,ll glplg:?g!.lojjii.?glig,q ,

f ff BSc (iii) - pHysrcs aoffi EsE -N''EMBER -2012Durotion :3 Hrs. SEMESTER _Vlzz/arJ

eL'YrLJrEn -Yl Mox : loo Morks

[Note:onr*?Hnuesrions;Eochor*,110.:'.":n"'ro["morksrol' Drow the circuit of o Non-inverting Uniiy Goin omprifier using opAMp.02. Define CMRR of o Differentiol omplif ier.03. Whot is the necessity for modulotion?04. Mention ony two odvonioges of FM over AM.05. Briefty exptoin the functioni;g of RADAR.05. Nome the primory Colours ,i.O in Colour T.V.07' convert Decimor number 2012 to its equivorent HEX ond ocTAL codes.08' when does o QUAD is formed in o K-rvopa wr..'"t is the odvontoge?09. lmplement HA using NAND.10. Modify o D-FF io function os o T_FF,

I l ' Drow the circuit,of on Inverting AVERAG_ING Amplif ier & exploin its working.l2' Exploin the production of Fnzrrioves by Reoctonce Tube meihod.13. Describe - Antenno oction ond Rodiotion resistonce.14. Exploin ihe Rote of DUpLEXER in oinOp,n system.l5' Drow the functionol ports of o ctmero tube ond exploin its working principle.16. Exploin the ,Error _ Detection, .oJ., ond Groy code.1z' Design o combinotionol togic circuit thot wil l detecio decimol number divisibleby three. Use Kmop to simp-rify. Drow ihe circuii using'onty NAND goies.18. Exploin how o 4bit Binory ootb con be serioily shiftei into o shift register.which shift operotion doubres the content of o register?

PART . B[Note: Answer Anv five euestions;

[ 5 x 8 = 4 0 1Eoch question cories eight morksl

[ 1 O+A+2i

PART . C[Note:nn,*uffipQuestions;Eochtiljffi:3l,*fuentymorks]

l9' (o) Prove ihot NoR GATE is on universor gote.b) Drow the rogic circuit of o 4-l MUX ,ing N^ND gotes.(c) lmplement EX-OR funct ion using the Mux.

20. with neoi functionor brock diogroms exproin the Tronsmission & Receprionprocess of r : Colcur TV. t lo+ lo l

Drow the circuit of cr Mod6 -shifr counter using JK Flip Frops.Exploin the working of the c i rcui t . Nonre the i l legol sJotes rr r r . .1E , . . - .u. ] : :_. ,

2 1 .

MADRAS CIIRISTIAN COLLEGE (AUTONOMOUS)

B. Sc DEGREE END OF SEMESTER EXAMINATIONS NOVEMBER - 2012

Br. (iii) PHYSICS

ELECTRONICS N (O81PY6MO1): 1

o t l n * NTIME:3IIRS SEMESTER.\rI

PART - A

MAX: 100 MARKS

Answer ALL the Questions: Q A x 2 : 2 0 )

1. What are the characteristics of an ideal Op-Amp?

2. Define common node rejection ratio in Op-Amp.

3. Convert (19.625h0 to binary number.

4. Show that A(A+B) = 4.9.

5. What are multiplexer and demultiplexer?

6. Define encoder and decoder.

7. How signals are classified in 8085 microprocessor?

8. What are the different functional categories in instructions of 8085 microprocessor?

9. What is the primary function of memory interfacing in microprocessor?

10. What is the role of Auxillary carry flag in 8085 microprocessor?

PART _ B

Answer any FIVE Questions: (5 x 8 :40)

11. Discuss the working of Op-Amp adder and subtractor circuits.

12. Construct an integrator and a differentiator circuit using Op-Amp and explain their

functioning.

13. Show that (A + B)(A + CXB + C) = (A + B)(A + C).

14. Explain how NAND and NOR gates act as universal logic gates.

cl

15. Explain the working of J-K flip flop with a diagram.

16. Write a short note on the following instruction sets in 8085 microprocessor:

(i) DAA, (ii) DAD, (iii) DCR, and (iv) DCX.

17. Explain how a memory read operation is carried out by 8085 microprocessor.

18. Illustrate the concept of time delay using one register in 8085 microprocessor.

PART - C

Answer any TWO Questions: Q x2o= 4o)

19. (a) Construct a circuit to solve the following simultaneous equations using Op-Amp:

x * 2 Y = J

2 x - Y = 1

(b) State and prove De Morgan's theorems.

20. (a) Draw the circuit of a 4-bit ripple counter using J-K flip flops and explain its

working.

(b) Explain the Architecture of 8085 microprocessor with a block diagram.

2f . (a) Explain the different ways of interfacing inputloutput devices with 8085

microprocessor.

(b) Write an assembly language program for finding the largest and smallest

number in an array using 8085 microprocessor.

* tr * * rf * ?k * * ** t( t( ** ?k * t *rr* tr* :k ts *

MADRAS CIIRISTIAN COLLEGE (AUTONOMOUS)

B. SC DEGREE END OF SEMESTER EXAMINATIONS NOYEMBER _ 2012

o t l t t * n tTIME: 3 HRS

(081PY6M03)

SEMESTER-VI

PART - A

MAX: 100 MARKS

(10 x 2 --20)Answer ALL the Questions:

\ - t1. Define the termrPrecision.

2. What are mechanical and electromagnetic dampings in a galvanometer?

( _ - t3. Define the terrySignificant figures.

4. What ja Ayrton shunt?

5. Give the sources of error in A.C. bridge circuit.

6. What is the basic role of cathode ray oscilloscope?

7. How the storage CRT's are classified?

8. What is the significance of IEEE 488 standard?

9. What is a strain guage?

10. What is a transducer?

PART - B

Answer any FIVE Questions: ( 5 x 8 = 4 0 )

11, Exptain the terms: (i) arithmetic mean, (ii) deviation from the mean, (iii) average

deviation and (iv) standard deviation.

12. Discuss with theory the working of a series-type ohmmeter.

13. Describe in detail the construction and working of a Wheat stone bridge.

14. Explain with a diagram the construction and working of a permanent magnet

moving coil instrument.

15. Derive the general condition for A.C. bridge balance.

16. Discuss in detail the role of delay line in cathode ray oscilloscope.

17. Describe the operation of IEEE 488 bus.

18. Explain any two types of temperature measurement transducers.

PART _ C

Answer any TWO Questions: Q xZO = 40)

f 9. (a) Explain the different types of errors in measurement.

(b) Describe the construction and working of electrodynamometer.

20. (a) Describe with theory the Maxwell's bridge for inductance measurement.

(b) Describe the functioning of a general purpose cathode ray oscilloscope with a

block diagram.

21. (a) With necessary diagram explain the construction and working of TFT display.

(b) Discuss the functioning of digital to analog multiplexing with a block diagram.

* * * * * * * * * * * * * * * * * * * * * * * * * *

MADRAS CHRISTIAN COLLEGE (AUTONOMOU S)

B.SC. DEGREE END OF SEMESTER EXAMINATIONS _NOV 2OI2

Group (iiD PHYSICS

06 l t l ANBIOPHYSICS

TIME : 3 HOURS SEMESTER : SIX MAX : 1OO MATKS

Answer ALL the questions. [10x2 = 2Ol

1. What are rods and cones?2. State Weber_Fechner law.3 State Stefan_Boltzman law.4. Give Bernoulli 's equation.5 What is the rerationship between Entropy and proba birity?6. State Dunn-Fry law.7. What is the type of detector used in CAT scan?8 What are stable and radioactive isotopuri-*,

,9. Are cell phones harmful to humans ? Why?10. Define Basal Metabolic rate.

PART. B

Answer any FIVE questions [5xg = zlQJ

11' Define and Discuss the various units used for measuring radioactivity. (4+4)12. summarize the principres of urtrasonic therapy with and example. g+a)13' Exprain counter current heat exchange as appried to whare frippers. (+a)

,]'i''#ffiHf J,l.:.t;'i?To"i'"'' or the enersv cvcte? Exprain rhe rivins body as a15 Give the theory of the GibbsHel mholtzeqLration.

16 What are the principles used in biotelemetry?

17' Define specific Activity and Reriltive Biorogicar etfectiveness. @+a)18' Explain the method of Radio carbon dating. what are the assumptions made? g+4)

PART. C

Answer any TWO questions [2x20= 401.

l9 Discuss the human body as a.f9at engine and an expression for peak short-termoutput' Exprain how this appti". io athretic purtoirln.u (10+5+5)

i?.n,H'n,J[..T'i of a block diagram explarn the stru*ure and workins or an ECG

21' Discuss the erectricar activity ot_lll:ruoy:.system of rhe human body. Exprain howthe resting and action potentiars lr.'rorr.d and their signrficance (ro+ro)

MADRAS CHRISTIAN COLLEGE (Autonomous)B.Sc. Degree End of Semester Examination November 2OL2

Branch (iii) Physics

Materials Science (08LPY6M05)

I ' ime:3 Hours Max: 100Semester: VI

Part Ao6f tr ftN

Answer All Questions [10 x 2 : 20 ]

1. Describe amorphous solid and crystalline solid witl'r example.

2. What are line defects?. I.Jame any two Vpes of the line clefects.

3. Define binding energ'y of a solid.

4. Draw a (110) plane and a (111) plane in the cell of a cubic lattice.

5. Explain polarization and how it is related to electric field.

6. Explain - 'temperature vs. resistivity' behavior of metals & semiconductor.

7. Explain Meissner effect?.

8. What is superconductor? Give an example.

9. What are main factors affecting the polymer crystalline structure?.

10. What is ionic polarization?.

Part- B

Answer Any Five Questions [ 5 x 8 = 4 0 ]

Describe the seven crystal system and Bravais latLices.

Discuss the different types of defects in solids.

Classify the solids as metals, insulators and semiconductors based on

band theory.

74. Explain briefly AX type of crystal sfiucture with suitable example.

15. What are dielectric materials ?. Give a note on breakdown of dielech'ic

materials.

76. Discuss the different types of magnetic materials based on their spins.

17. f)escribe the light scattering method for molecular weight determinations of

polymer.

18. Discuss soft and hard magnetic materials.

lp* t \

"J - ' -o )

1 1 .

72.

13.

- ) -

Part- C

Answer any Two Questions 12.x20:401

19.(a) Obtain Bragg's law for X-ray diffraction in crystals and describe the

X-ray powder diffraction technique for structure determinations. (6+10)

(b) Determine the lattice parameter and the atomic diameter of FCC

crystal. (The distance between (111) planes in this crystal is 2 A) (4)

20.(a) Explain the free electron theory of metals.

(b) Write a note on ferroelectric materials and discuss their

characteristics with example.

27.(a) Describe the Hysteresis loop of typical Ferromagnetic material

the different types of magnetic materials based on their spins.

(b) Write note on (i) polymerization (ii) Conducting polymers.

(12)

(8)

and discuss

(6+6)

(4+4)

*:k***

MADRAS CHRISTIAN COLLEGE AUTONOMOUSB.Sc DEGREE EXAMINATTONS _NOv 2012

og/rr a r'lTIME :3 HOURS

Answer ALL questions :

NUCLEAR PHYSICS081PY6M02

SEMESTER-VI

PART -AIVIAX: NIARKS 100

2Xl0:20MARKS

5X8:40MARKS

5marks

l.2 .3 . .4 . .5 .6.7.8 .9.l 0

.De€ine mass defect and binding energy .What is natural radioactivity?Express I^nLu. rn energy units.State Geiger-Nuttal law.Name the isotopes of Uranium.

!/hat are phosphors? Name a phosphor.Give a limitation of the cyclotion. How is this rectified?Name the magic number nuclei.

l$v i: the average number of neutrons emitted during fission a non integer?What is plasma?

PART _B

I l' calculate the energy released (Mev) in F: lll_oxg equarion. 4 1Hr -,)

zHea+ 4-. if the mass of hydrogen nucleus is 1.007ffi.u" unJ Helium is 4.00261il.u12'whatis carbon dating?.How is the age of the earth determil.o ot,ntr'11.'uielt (2+6) marks13,. IFul are nuclear emulsion plates? 4+4marks

, ,' Listthe advantages of nuclear emulsion plates over other detectors.14. Explain the working of a Van de Graaf generatoi.15. Explain thermonuclear reactions in stars.

I 9. RX}, I :1ft -.qy,"ions rhe prodr.lction of radioisotopes.lj. _ty'1l.,u notg on the meson theory qf nuclear forces.lu. wntera note on anti particles. How are they detected ? (6+2marks)

PART-{Answer AI.IY TWO questions : 2X20:40MARKS

l9.Distinguish between alpha and beta spectrum. 6markslytain the beta spectrum qualitativefi. t0markswhat is the role of 'eutrino iu explaining beta decay. 4***,

Answer ANY FIVE questions :

20.Explain with a diagramcondition.

theprinciple of workin-g of a cyclotron. Derive the cyclotron' s+lOmarks

Explain how the synchrotron is a modification of the cyclotron

21. What are elementaryparticles ? . '5_*k,

59y -" they clar;sifiid according to their,"*. ."0 ,pir,? l0 marksWrite a note on quarks. 5 marks

- 4 \ - f i

MADRAS CHRTSTTAN COLLEGE (AUTONOMOUS)

B.Sc. DEGREE END OF SEMESTER EXAMINATIONS - November2Ll2

TITLE OF THE PAPER: OPTICS AND SPECTR0SCOPY (OsrPYsMO3)blu 6j

I "TIME:3HRS MAX. MARKS: 100

SECTION - A

Answer ALL the questions: (10 x 2 :20)

1. State Rayleigh's criterion for resolution of spechal lines.2. What is a zone plate?3. Give any two differences between interference and diffraction.4. What is an isotope? Give one example.5. Define optical activity.6. Draw the intensity distribution of the diffracti"rtpattern obtained by Fraunhofer

diftaction at a single slit and double slit.7. State the principle of holography.8. What is double refraction?9. Define optic axis.I0. Dcfinc Einstcin's cocfficicnt.

SECTION - B

Answer ANY FIVE questions:

I l. Discuss the theory of Fraunhofer diffraction at a circular aperture.

(5 x 8 :40)

12. Obtain an expression for the resolving [nwer ol' a telescope. Compare it with theresolving power of a prism.

13. Explain thc fundarnental cquations of elcctromagrretic field as dsrivcd by Morwr:ll.

. 14. a) A light of wavelength 435nm falls normally on a diffraction grating containing 15,000lincs pcr inch. Find itsanglc of diffizction for thc first ordcr.b) Find the thickness of the quarter wave plate and half wave plate given that p, = 1.52and po : l.4l I for i' = 5461A.

15. Describe the working of l.aurent's half shade polarimeter.16. Explain the rotation specfia produced by a rigid rotator.17. Explain the constnrction and working of a Nicol prism.18. a) Write a note on spontaneous and stimulated emission.

b) Discuss in detail the application of laser in indusfies.

(r-i- o)

SECTION - C

Answer AnfY TWO questions: (2 x20: 40)

19. a) Describe the working of Michelson's interferometer with a neat diagram.b) Discuss the theory of plane diffraction gating.

20.a) Discuss Huygen's explanation of double refraction in uniaxial crystals when the opticaxis is pcrpcndicular to thc planc of incidcncc and parallcl to thc crystal surfacc.b) Explain the production and detection of elliptically and circularly polarized light.

21. a)With necessary diagram, explain the instrrunentation offarrnspectroscopy.b) Define Laser action. Explain the construction and working of Ammonia Maser withnecessa'/ diagram'

rrr*rr*r

, . 1, I t ,

r lt it . . .

. tI

I

r l

MADRAS CHRISTIAN COLLEGE (Autonomous)

B.Sc DEGREE EXAMINATION - NOVEMBER 2OL2$r: i i i Pr-lysrcs

. PHYSTCS FOR MATHS - rI (O81Pr2AOUrqltt ftN

Tirire: 3 Hrs. :"' : ' . "' Max' Marks: 1OO

Answer all questions:

SECTION - A

( 1 O X 2 = 2 o m a r k s f

1. Write the equation for displacement at time t of a particle executing

simple harmonic motion whose amplitude is A, initial phase n and

period T.2. Brief on forced vibrations'

3. Mention'any two applications of Michelson's interferometer.

4. What is double refraction?

5. What is meant by optical activity?

6. Write the truth table for a two input AND gate.

7 . Draw the circuit for a non-inverting amplifier using op-amp.g. what is the bandwidth of an amplitude modulated wave?

9. Define frequency modulation.

10. What are semiconductor nano-crystals?

SECTION - B

Answer any FIVE questions: { 5 x 8 = 4 0 m a r k s }

1 1. Discuss analytically the composition of tu;o simple harmonic motions of

the same period (different amplitude and phase) at right angles to onc

another.

12. Dist inguish betu,een clamped and forced vibrations. What is meant bv

sirarpncss of r-estinal lce..13.

A g lass rnedge of angle 0.01 radian is i l l r - rmi l - ra tcd by monochromat lc

light of 6000 A, falling normally on it. At what distance from the edge o1

thc r , r ,edgc. u , i1 l ber thc ' l01 i ] l r inge l le obscrvec l bv rc f lcc :1ec i l ight '

14. List the characteristics of an ideal operational amplifier'

15. With a circuit explain the u'orking of 555 t imer as a tnonostablt '

rnulti-"'ibrator.

: P :

16. Plane polarized light is incident on a piece of quartz plate cut parallel to

the axis. Find the least thickness for which the ordinary and the

extraordinary rays combine to form plane polarized light. Given thatwavelength is 5OO0 Ao, [tB = 1.5533 and po = 1..5442.

17. With a block diagram explain a superhetrodyne AM radio receiver,

18. Calculate the numerical aperture and the acceptance angle of an optical

fibre whose core and cladding are made of materials of refractive indec

1.55 and 1.5 respectively.

SECTION - C

Answer any TWO questions: 12 X 20 = 40 marksf

19. What are ultrasonic waves? Explain the Piezo-electric method ofproduction of ultrasonic waves. Mention any four applications of

ultrasonic waves.

20. a) With a circuit, explain the working of a differentiator using Opamp.

b) State and prove De-Morgan's theorem.

2I. a). Describe the method for determination of wavelength of light using aplane transmission grating.

b) With a block diagram expiain the optical fibre communication system.