Post Utme University of Calabar Physics Past Questions and Answers

Question 11:

A truck traveling with a velocity of \(40 m / s\) applies the brakes and comes to a halt after 20 seconds. What is the distance traveled by the truck before coming to a halt

A. 40 m
B. 800 m
C. 400 m
D. 10 m

Question 12:

If the linear expansitivity of a metal rod is \(4 \times 10^{-5}\) per C, what will be the new length of thr rod if it heated heated from \(15^{\circ} C\) to \(95^{\circ} C\) from its original length of \(20 cm\)

A. \(0.064 cm\)
B. \(0.64 cm\)
C. \(20.64 cm\)
D. \(20.064 cm\)

Question 13:

\(44 KJ\) of heat was used in raising the temperature of \(2 kg\) of paraffin oil from \(360 K\) to \(370 K\). Calculate the specific heat capacity of paraffin oil

A. \(2.2 J / kg / K\)
B. \(22 \times 10^{3} J / kg / K\)
C. \(22 \times 10^{5} J / kg / K\)
D. 220 I kg / K

Question 14:

A simple machine overcomes a load of \(4000 N\) when a force of \(200 N\) is applied. If the velocity ration of the machine is 25 , calculate the efficiency of the machine?

A. \(1,25 \%\)
B. \(80 \%\)
C. \(125 \%\)
D. \(0.8 \%\)

Question 15:

A long sighted person is to read a book held at a distance of \(20 cm\) from the eyes. Which of the following will the person require to read the book with ease?

A. Nothing
B. Concave lens
C. Convex lens
D. Concave mirro