Question 156:

• JAMB 1981

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

A. Raise the temperature of unit mass of the substance by 1 ^oC
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^oC

Question 157:

• JAMB 1981

The following types of waves are transverse EXCEPT

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

Question 158:

• JAMB 1981

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

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

Question 159:

• JAMB 1981

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

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

Question 160:

• JAMB 1981

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

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