Post Utme Physics Past Questions and Answers

Question 1291:

The refractive index of a liquid is \(1.5\), if the velocity of light in a vacuum is \(3.0 \times 10^{8} ms ^{2}\), the velocity of light in the liquid is ____________

A. \(1.5 \times 10^{8} ms ^{-2}\)
B. \(2.0 \times 10^{8} ms ^{-1}\)
C. \(3.1 \times 10^{8} ms ^{-}\)
D. \(4.5 \times 10^{8} ms ^{-1}\)
E. \(9.0 \times 10^{8} ms ^{-1}\)

Question 1292:

A train has an initial velocity of \(44 m / s\) and an acceleration of \(-4 m / s\) what is its velocity after 10 seconds?

A. \(2 m / s \)
B. \(4 m / s\)
C. \(8 m / s\)
D. \(12 m / s\)
E. \(16 m / s\)

Question 1293:

A man of mass \(50 kg\) ascends a flight of stair \(5 m\) high in 5 seconds. If acceleration due to gravity is \(10 ms ^{-2}\), the power expanded is ____________

A. 100W
B. \(300 W\)
C. \(250 W\)
D. \(400 W\)
E. \(500 W\)

Question 1294:

Two strings of the same length and under the same tension give notes of frequency in the ratio \(4: 1\). The masses of the strings are in the ratio of ____________

A. \(2: 1\)
B. \(1: 2\)
C. \(1: 4\)
D. \(1: 7\)
E. \(1: 16\)

Question 1295:

What is the dimension of pressure?

A. \(ML ^{-1} T ^{-2}\)
B. \(MLT ^{-2}\)
C. \(ML ^{2} T ^{-3}\)
D. \cdot ML ^{-3}\)