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 $3.0\times {10}^{8}m{s}^2$, the velocity of light in the liquid is ____________

A. $1.5\times {10}^{8}m{s}^{-2}$
B. $2.0\times {10}^{8}m{s}^{-1}$
C. $3.1\times {10}^{8}m{s}^{-}$
D. $4.5\times {10}^{8}m{s}^{-1}$
E. $9.0\times {10}^{8}m{s}^{-1}$

Question 1292:

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

A. $2m/s$
B. $4m/s$
C. $8m/s$
D. $12m/s$
E. $16m/s$

Question 1293:

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

A. 100W
B. $300W$
C. $250W$
D. $400W$
E. $500W$

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. $M{L}^{-1}{T}^{-2}$
B. $ML{T}^{-2}$
C. $M{L}^2{T}^{-3}$
D. \cdot ML ^{-3}\)