Post Utme Physics Past Questions and Answers

Question 86:

What is the Celsius equivalent of ${50.0}^{\circ }\mathrm{F}$ ?

A. ${10}^{\circ }\mathrm{C}$
B. ${20}^{\circ }\mathrm{C}$
C. ${30}^{\circ }\mathrm{C}$
D. ${40}^{\circ }\mathrm{C}$

Question 87:

How far from a concave mirror of radius $120\mathrm{cm}$ must an object be placed such that its erect image is four times its natural size?

A. $72\mathrm{cm}$
B. $64\mathrm{cm}$
C. $45\mathrm{cm}$
D. $50\mathrm{cm}$

Question 88:

How many images are formed when an object is placed in front of two plane mirrors that are inclined at angle 30 o to each other?

A. O
B. 6
C. 11
D. 12

Question 89:

A body falls freely under gravity $(\mathrm{g}=9.8\mathrm{m}/{\mathrm{s}}^2)$ from a height of $10\mathrm{m}$ on top of $\mathrm{a}$ platform $0.8\mathrm{m}$ above the ground. Its velocity on reaching the platform is ____________

A. $7848\mathrm{m}/\mathrm{s}$
B. $80\mathrm{m}/\mathrm{s}$
C. $78\mathrm{m}/\mathrm{s}$
D. $27.78\mathrm{m}/\mathrm{s}$

Question 90:

A hydrometer is an instrument used for measuring the ____________

A. Depth of water in a vessel
B. Relative density of a liquid by method of flotation
C. Relative density of a liquid by finding the apparent loss in weight
D. Relative humidity of the atmosphere