15 minute physics quiz

8/9/2019 15 Minute Physics Quiz

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15 MINUTE PHYSICS QUIZ

1. 2 identical beakers, A and B, contain 3 cm3 of water and ethanolrespectively. Heat energy of 4J is applied separately to each beaker.

After 10 minutes, it is noticed that the temperature in beaker B ishigher than that of beaker A. What factor(s) best account for the

difference in temperature?

a) Difference in mass between water and ethanolb) Difference in specific heat capacity between water and ethanolc) Difference in thermal conductivity between water and ethanold) a) and b) abovee) b) and c) above2. In an experiment to verify Hookes law with a spiral spring, a student

tabulates his observation as shown below

S/N Force (N) Extension

(cm)

1 10 8.0

2 12 9.6

3 14 11.2

4 16 13.4

Which of the following conclusions is right assuming that the experiment

was conducted minimizing errors?

a) The spring does not obey Hookes lawb) After the experiment, the spring returns to its original lengthc) The elastic limit of this spring has been exceededd) The elastic limit of this spring lies somewhere between 10 and 11 cme) If the stiffness constant of the spring is doubled, a force of 12N will

yield greater extension than 9.6cm


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7. A virtual image formed by a convex lens cannot bea) Uprightb) Magnifiedc) On the same side as the objectd) Focused on a screene) Traced accurately8. Which of the following best explains the reason one cannot have

infinite current in an electrical circuit

a) It is impossible to have infinite Potential differenceb) It is impossible to have infinite resistancec) It is impossible to have zero resistanced) It is impossible to have zero Potential Differencee) a) & b)9. In which of the following media will sound travel fastesta) Airb) Waterc) Methane Gasd) Steele) Vacuum10.In which of the following media will light travel fastesta) Airb) Vacuumc) Waterd) Steele) None of the above

11.Which of these laws can account for the sudden increase in gaspressure in an enclosed vessel

a) Pressure lawb) Boyles lawc) Charles Lawd) The general gas Equatione) The kinetic theory of gases


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12.Refractive index of a glass block relates the following excepta) Sines of incidence and refraction angles of light from air to glassb) Velocity of light in glass and velocity of light in airc) Distance of vision in air and distance of vision in glassd) Frequency of light in glass and frequency of light in aire) Wavelength of light in glass and wavelength of light in air13.Which of the following properties defies temperature as being a

degree of hotness or coldness of a body

a) Specific heat capacityb) Latent heat of fusionc) Heat transfer coefficientd) Thermal conductivitye) Heat capacity14.The lens formula is only applicable within the conditions listed below

except that

a) The object, lens, and screen are coplanarb) The object is sharpc) The sign convention is appliedd) The object distance is twice the focal length of lense) b) & c)15.Every moving solid object obeys Newtons Second law of motion.

True or false. Give 1 reason for your answer.

15 minute physics quiz

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