The period of an oscillatory motion is defined as the

time to complete one oscillation.

average of the times used in completing different numbers of oscillations

time to complete a number of oscillations.

Time taken to move from one extreme position to the other.

Two bodies, P and Q, are in thermal equilibrium. Which of the following statements about the bodies is correct?

P and Q are at the same temperature

The temperature of Q is higher than that of P.

P and Q have the same heat capacity.

The speed of sound in air is directly proportional to

the square root of its temperature on the absolute scale.

its temperature on the Celsius scale.

its temperature on the thermodynamic scale.

the cube root of its temperature on the Celsius scale.

Which of the following is not one of the assumptions of kinetic thedry?

The number of molecules in a small volume is small.

The molecules move in straight lines between collisions.

All molecules are identical for a given gas.

THE WAY (PHYSICS)

Questions

Settings

Create your own Quiz

Share on Facebook Share on Twitter Share on Whatsapp Share on Pinterest Share on Email Copy to Clipboard Embed on your website

Physics test for post-ume examination

Questions and Answers

1.

A piece of metal of relative density 5.0 weighs 60 N in air. Calculate its weight when frilly immersed in water.
- A.
  
  4N
- B.
  
  5N
- C.
  
  48N
- D.
  
  60N
Correct Answer
C. 48N
2.

A force acts on a body for 0.5 s changing its momentum from 16.0 kg m s"¹ to 21.0 kg m s"¹, calculate the magnitude of the force
- A.
  
  42.0N
- B.
  
  37.0N
- C.
  
  32.0N
- D.
  
  10.0N.
Correct Answer
D. 10.0N.
3.

The period of an oscillatory motion is defined as the
- A.
  
  Average of the times used in completing different numbers of oscillations
- B.
  
  Time to complete a number of oscillations.
- C.
  
  Time to complete one oscillation.
- D.
  
  Time taken to move from one extreme position to the other.
Correct Answer
C. Time to complete one oscillation.
4.

A platinum resistance thermometer has a resistance of 4 Q at 0 °C and 10 Q at 100 °C. Assuming the resistance changes uniformly with temperature, calculate the resistance of the thermometer when the temperature is 45 °C.
- A.
  
  14.0 Q
- B.
  
  6.7 Q
- C.
  
  3.2 Q
- D.
  
  2.7 Q.
Correct Answer
B. 6.7 Q
5.

Two bodies, P and Q, are in thermal equilibrium. Which of the following statements about the bodies is correct?
- A.
  
  The temperature of Q is higher than that of P.
- B.
  
  P and Q have the same heat capacity.
- C.
  
  P and Q have the same mass.
- D.
  
  P and Q are at the same temperature
Correct Answer
D. P and Q are at the same temperature
6.

An object is placed on the principal axis and at the centre of curvature of a concave mirror the image of the object formed by the mirror is .
- A.
  
  Real and magnified.
- B.
  
  Real and inverted.
- C.
  
  Erect and magnified.
- D.
  
  Erect and virtual.
Correct Answer
B. Real and inverted.
7.

The direction of induced current in a straight wire placed in a magnetic field is determined by using
- A.
  
  Fleming's right hand rule.
- B.
  
  Maxwell's screw rule.
- C.
  
  Faraday's law.
- D.
  
  Lenz's law.
Correct Answer
A. Fleming's right hand rule.
8.

The speed of sound in air is directly proportional to
- A.
  
  Its temperature on the Celsius scale.
- B.
  
  Its temperature on the thermodynamic scale.
- C.
  
  The cube root of its temperature on the Celsius scale.
- D.
  
  The square root of its temperature on the absolute scale.
Correct Answer
D. The square root of its temperature on the absolute scale.
9.

Which of the following is not one of the assumptions of kinetic thedry?
- A.
  
  All collisions are elastic.
- B.
  
  The molecules move in straight lines between collisions.
- C.
  
  The number of molecules in a small volume is small.
- D.
  
  All molecules are identical for a given gas.
Correct Answer
C. The number of molecules in a small volume is small.
10.

It is noticed that the bottom of a glass cup filled with a liquid appears to be raised by 1/6 of the height. Calculate the refractive index of the liquid.
- A.
  
  6
- B.
  
  1.2
- C.
  
  1.42
- D.
  
  1.5.
Correct Answer
B. 1.2

Quiz Review Timeline +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

Current Version
Dec 31, 2012

Quiz Edited by
ProProfs Editorial Team
May 14, 2009

Quiz Created by
Samsongd1

The Way (Physics)

A piece of metal of relative density 5.0 weighs 60 N in air. Calculate its weight when frilly immersed in water.

A force acts on a body for 0.5 s changing its momentum from 16.0 kg m s"1 to 21.0 kg m s"1, calculate the magnitude of the force

The period of an oscillatory motion is defined as the

A platinum resistance thermometer has a resistance of 4 Q at 0 °C and 10 Q at 100 °C. Assuming the resistance changes uniformly with temperature, calculate the resistance of the thermometer when the temperature is 45 °C.

Two bodies, P and Q, are in thermal equilibrium. Which of the following statements about the bodies is correct?

An object is placed on the principal axis and at the centre of curvature of a concave mirror the image of the object formed by the mirror is .

The direction of induced current in a straight wire placed in a magnetic field is determined by using

The speed of sound in air is directly proportional to

Which of the following is not one of the assumptions of kinetic thedry?

It is noticed that the bottom of a glass cup filled with a liquid appears to be raised by 1/6 of the height. Calculate the refractive index of the liquid.

A force acts on a body for 0.5 s changing its momentum from 16.0 kg m s"¹ to 21.0 kg m s"¹, calculate the magnitude of the force