University of Nigeria Physics Post Utme Past Questions and Answers

Question 1 :

A stone and a feather are dropped from the same height above earth surface. Ignoring resistance, which of the following is correct?

A. The feather will be blown away by the wind while the stone will drop steadily
B. The stone and feather will both reach the ground at the same time
C. The feather will reach the ground first
D. The stone will reach the ground first

Question 2 :

An air bubbles rises from the bottom to the top of a water dam which is \(40 \mathrm{~m}\) deep. The volume of the bubble just below the surface is \(2.5 \mathrm{~cm}^{3}\). Find its volume at the bottom of the dam, if atmospheric pressure is equivalent to \(10 \mathrm{~m}\) of water.

A. \(2.0 \mathrm{~cm}^{3}\)
B. \(1.6 \mathrm{~cm}^{3}\)
C. \(0.625 \mathrm{~cm}^{3}\)
D. \(0.5 \mathrm{~cm}^{3}\)

Question 3 :

When equal weights of iron and water are subjected to an equal supply of heat, if is found that the piece of iron becomes much hotter than water after a shorter time because higher than that of water

A. The specific heat of iron is higher than that of water
B. Iron is in solid form
C. Water is in liquid form
D. The specific heat of water is higher than that of iron
E. The specific heat of iron is infinite

Question 4 :

Of two identical tuning forks with natural frequency \(256 \mathrm{~Hz}\), one is loaded so that 4 beats per seconds are heard when they are sounded together. What is the frequency of the loaded tuning fork?

A. \(260 \mathrm{~Hz}\)
B. \(252 \mathrm{~Hz}\)
C. \(248 \mathrm{~Hz}\)
D. \(246 \mathrm{~Hz}\)

Question 5 :

Radio waves have a velocity of \(3 \times 10^{8} \mathrm{~m} / \mathrm{s}\). A radio station sends out a broadcast on a frequency of \(800 \mathrm{KHz}\). The wavelength of the broadcast is ____________

A. \(240.0 \mathrm{~m}\)
B. \(267.0 \mathrm{~m}\)
C. \(375.0 \mathrm{~m}\)
D. \(37.5 \mathrm{~m}\)
E. \(26.7 \mathrm{~m}\)