Jamb Physics 1981 Past Questions and Answers

Question 1:

• JAMB 1981

The ice and steam points of mercury-in-glass thermometer of centigrade scale and of uniform bore correspond respectively to 3cm and 19cm lengths of the mercury thread when the length is 12cm, the temperature is

A. 32^oC
B. 48^oC
C. 56^oC
D. 65^oC
E. 75^oC

Question 2:

• JAMB 1981

The ice and steam points of mercury-in-glass thermometer of centigrade scale and of uniform bore correspond respectively to 3cm and 19cm lengths of the mercury thread when the length is 12cm, the temperature is

A. 32^oC
B. 48^oC
C. 56^oC
D. 65^oC
E. 75^oC

Question 3:

• JAMB 1981

A vapour is said to be saturated when

A. Moer molecules return to the liquid than leave it
B. A dynamic equilibrium exists between the liquid molecules and the vapour molecules at a given temperature
C. The vapour pressure is atmospheric
D. The temperature of the vapour varies
E. All molecules are moving with the same speed

Question 4:

• 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 5:

• 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