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Physics Past Questions and Answers

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Physics Questions

Question 151:

The latent heat of fusion of a substance is the heat required to

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A Raise the temperature of unit mass of the substance by 1 <sup style='font-size: smaller;'>o</sup>C
B Maintain unit mass of the substance at constant temperature
C Change unit mass of substance from solid to liquid at constant temperature
D Change unit mass of liquid to vapour at constant temperature
E Raise the temperature of unit mass by 100<sup style='font-size: smaller;'>o</sup>C

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Question 152:

The following types of waves are transverse EXCEPT

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A Light waves
B Radio waves
C Sound waves
D Surface waves on water
E X-rays

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Question 153:

The principle of transmissibility of pressure in a fluid at rest in all directions is known as

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A Archimede's principle
B Flotation Principle
C Newton's lwa
D Pascal's law
E Boyle's law

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Question 154:

When fixed mass of an ideal gas expands at constant temperature, which property of the gas molecule increases?

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A Average number per unit volume
B Average kinetic energy
C Average speed
D Average seperation
E Average number of collisions per unit time

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Question 155:

Which of the following does NOT describe the image formed by a plane mirror?

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A Erect
B Laterally inverted
C Same distance from mirror as object
D Magnified
E Virtual

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