Post Utme Ebonyi State University Physics Past Questions and Answers

Question 6:

At constant pressure, the density of a fixed gas is ____________

A. Constant with temperature
B. Proportional to its volume
C. Inversely proportional to its temperature
D. Independent of its volume

Question 7:

How much heat is absorbed when a block of copper of mass \(0.05 \mathrm{~kg}\) and specific capacity 390\(J\mathrm{kg}-1 \mathrm{~K}-1\) is heated from \(20^{\circ} \mathrm{C}\) to \(70^{\circ} \mathrm{C}\) ?

A. \(3.98 \times 10^{-1} \mathrm{~J}\)
B. \(9.75 \times 10^{2} \mathrm{~J}\)
C. \(3.98 \times 10^{3} \mathrm{~J}\)
D. \(9.75 \times 10^{3} \mathrm{~J}\)

Question 8:

A block of ice floats on water inside a container. If the block of ice gets a container. If the block of ice gets completely melted, the level of water in the container will ____________

A. Increase
B. Remain the same
C. Decrease
D. First decreases and then increase

Question 9:

The space between the double glass walls of a thermos flask is evacuated and the two surfaces facing the evacuated spaces are silvered. The residual source of heat loss takes place by ____________

A. Convection
B. Radiation from the surfaces
C. Conduction through the stopper and the glass
D. Conduction across the walls

Question 10:

Which of the following characteristics of wave is used in the measurement of the depth of the sea?

A. Diffusion
B. Interference
C. Refraction
D. Reflection