Post Utme Physics Past Questions and Answers

Question 226:

If the distance between two suspended masses 10 Kg each is tripled, the gravitational force of attraction between them is ____________

A. Reduced by one-half
B. Increased by one-third
C. Decreased by one-third
D. Decreased by one-ninth

Question 227:

If the radius of the earth is \(6.4\) \(x 10^{6} \mathrm{~m}\), the escape velocity of a satellite from the earth (take \(\left.\mathrm{g}=10 \mathrm{~ms}^{-2}r; jnjk, bight)\)

A. \(1.13 \times 10^{4} \mathrm{~ms}^{-1}\)
B. \(9.00 \times 10^{3} \mathrm{~ms}^{-1}\)
C. \(8.00 \times 10^{3} \mathrm{~ms}^{-1}\)
D. \(1.27 \times 10^{4} \mathrm{~ms}^{-1}\)

Question 228:

If a body of mass \(5 \mathrm{Kg}\) is thrown vertically upwards with a velocity \(U\), at what height will the potential energy equal to the kinetic energy?

A. \(h=\frac{u^{2}}{g}\)
B. \(h=\frac{\mathrm{U}^{2}}{4 \mathrm{~g}}\)
C. \(h=\frac{2 U^{2}}{g}\)
D. \(\mathrm{h}=\frac{\mathrm{U}^{2}}{2 \mathrm{~g}}\)

Question 229:

The rate of heat loss by a body is proportional to the ____________

A. Difference in temperature between the body and its surrounding
B. Temperature of its surrounding
C. Ratio of the temperature of the body to that of the surrounding
D. Temperature of the body

Question 230:

In a gas experiment, the pressure of the gas is plotted against the reciprocal of the volume of the gas at constant temperature, the unit of the slope of the resulting curve is ____________

A. Force
B. Temperature
C. Power
D. Work