Jamb Physics 2014 Past Questions and Answers

Question 21:

• JAMB 2014

The temperature at which the water vapour present in the air is just sufficient to saturate air is

A. Boiling point
B. Ice point
C. Saturation point
D. Dew point

Question 22:

• JAMB 2014

Heat transfer by convection in a liquid is due to the

A. Latent heat of vaporization of the liquid
B. Increased vibration of the molecules of the liquid about theit mean position
C. Variation of density of the liquid
D. Expansion of the liquid as it is heated

Question 23:

• JAMB 2014

The distance between two successive crests of a wave is 15cm and the velocity 300ms^-1. Calculate the frequency.

A. 2.0x10²Hz
B. 4.5x10³Hz
C. 2.0x10³Hz
D. 4.5x10²Hz

Question 24:

• JAMB 2014

A boy receives the echo of his clap reflected by a nearby hill 0.8s later. How far is he from the hill?

A. 528m
B. 66m
C. 136m
D. 264m

Question 25:

• JAMB 2014

An object is placed 10m from a pinhole camera of length 25cm. Calculate the linear magnification.

A. 2.5x10²
B. 2.5x10^-2
C. 2.5x10^-1
D. 2.5x10¹