Post Utme Physics Past Questions and Answers

Question 1271:

If two masses $40g$ and $60g$ respectively, are attached firmly to the end of a light metre rule, what is the centre of gravity of the system?

A. At the mid point of the metre rule
B. $40cm$ from the lighter mass
C. $40cm$ from the heavier masses
D. $60cm$ from the heavier mass
E. Indeterminate because the metre rules is light

Question 1272:

To find the dept of the sea, a ship sends out a second waves and receives an echo after one second. If the velocity of sound in water is $1500m/s$, what is the depth of the sea

A. $0.75km$
B. $1.50km$
C. $2.20km$
D. $3.00km$
E. $3.75km$

Question 1273:

What is the neutron in the Uranium isoptope ${}_{92}^{218}X$ ?

A. 92
B. 146
C. 238
D. 330
E. 119

Question 1274:

A machine has a velocity ratio of 5 . If it requires a $50kg$ weight to overcome $200kg$ weight, the efficiency is ____________

A. $4\mathrm{\%}$
B. $5\mathrm{\%}$
C. $40\mathrm{\%}$
D. $50\mathrm{\%}$
E. $80\mathrm{\%}$

Question 1275:

If the force on a charge of $0.2$ coulomb in an electric field is $4N$, then electric intensity of the field is ____________

A. $0.8$N
B. $0.8N/C$
C. $20.0N/C$
D. $4.2N/C$
E. $20.0C/N$