JEE / MHCET 2014PHYSICS

An Approach ……………………………by Dr. Arun Shridharan Pillai

•Board Examination is Repetition

•X or XII (BOARD) is practice

•JEE – No Repetition

•Aptitude is Tested

Sr. No. CLASS XI CLASS XII

1Physical world and measurement Electrostatics

2 Kinematics Current Electricity

3 Laws of Motion Magnetic Effects of Current and Magnetism

4 Work, Energy and Power Electromagnetic Induction and Alternating Currents

5 Rotational Motion Electromagnetic Waves6 Gravitation Optics

7 Properties of Bulk Matter Dual Nature of Matter and Radiation

8 Thermodynamics Atoms and Nuclei

9Behavior of Perfect Gas and Kinetic Theory Electronic Devices

10 Oscillations and Waves Communication Systems

TOPICS in Physics for JEE

• No change in Pattern and marking scheme. • The format is the same with 90 questions in total and 30 questions each for Physics, Chemistry and Mathematics. • Each correct answer gets 4 marks• Each wrong answer gets -1 mark.

Weigtage of Topics for JEE-2014

Simple Questions

with confusing

replies

1. (x+5)/(x+5) = 1

(a) Always

(b) Not Always

(c) Only for Positive Numbers

(d) Only for Negative Numbers

Correct Answer is (b)Not Always?????Why

Suppose x = - 5We know that 0/0=absurd

2. Sin θ X Cot θ = Cos θ

WE THINK

Sin θ X Cos θ = Cos θ Sin θ

Now is it valid for θ =0

1 Which of the following quantities have unit, but not the dimensions.

(a) dielectric constant

(b) coefficient of viscosity

(c) plane angle

(d) refractive index

Questions of Deep Knowledge

2. A block of mass 10kg is resting on a horizontal surface. A force of 50N is applied on it. If coefficient of friction between the block and the surface is 0.6. what will be the force of friction? (g = 10 m/s2)

(a) Zero

(b) 50 N

(c) 60 N

(d) 40 N

CORRECT OPTION IS

(b) 50 N

fs = mgμ

fs = 10×10×0.6

fs = 60N

But applied force is 50N.

Hence, the block will not move.

g

Rcos

R cos

g

R cos2

g

1 g

2 R cos

3. A hemispherical bowl of radius R is revolved around its vertical axis. A Light weight sphere in it also revolves in it, without sliping. The radius of the hemispherical passing through the sphere makes angle θ with the axis of rotation. The angular velocity of the sphere is:

(a) (b)

(c) (d)

Solution:Motion of the sphere is like motion of conical pendulum.Hence R cos

T 2g

2but T

2 R cos2  

g

g       

R cos

Questions on application mind

1.Charge q moves around charge Q in circular path. The work done by charge Q on q is

(a) (b)

(c) Zero (d)

20

1 Qq

4 k r 0

1 q

4 k r

20

1 Qq2 r

4 k r

Solution: Charge q is moving over an equipotential surface Hence, work done is zero.

2. Time taken by radio waves to go come back from communication satellite is nearly

(a) 1s (b)

(c) (d) 4s

1s

4

1s

8

Height of communication satellite above the surface of the earth is 36000 km.

∴ Distance travelled by radio waves = 72000 km

Velocity of radio waves = 3 × 108 m/s

8

6

6

72000kmtime

3 10 m / s

72 10 1time

300 10 4

•Identify theoretical chapters •Identify numerical based chapters •Take Practice test

• An other very important aspect of your JEE/NEET preparation will be the coaching institute– FACULTY – Delivery of Lecture– Concept Understanding and doubt solving

session– Periodic Test– Evaluation of test– Infrastructure

Full Portion Tests

Time Table

Time Allotment

Mistakes

Confidence

• Suggested Books For IIT-JEE/ NEET –Physics by H.C. Verma–Problems in Physics by I.E. Irodov –Problems in Physics by Resnick and

Halliday–ELECRICITY AND MAGNETISM by

Resnick and Halliday –Circuits devices and systems by R.J.

Smith

Thank

you ...!Prof. (Dr) Arun Shridharan Pillai

Ph.D (Physics) , M.Sc (Physics), C-VLSI9819110096 / profarun@gmail.com