Post Utme Physics Past Questions and Answers

Question 521:

How many grams of water at \(17^{\prime} \mathrm{C}\) must be added to \(42 \mathrm{~kg}\) of ice at \(O C\) to melt the ice completely?

A. \(200 \mathrm{~g}\)
B. \(300 \mathrm{~g}\)
C. \(320 \mathrm{~g}\)
D. \(400 \mathrm{~g}\)

Question 522:

The wavelength of the first overtone of a dosed pipe of length \(33 \mathrm{~cm}\) is of a dosed pipe of length \(33 \mathrm{~cm}\) is ____________

A. \(44 \mathrm{~cm}\)
B. \(33 \mathrm{~cm}\)
C. \(22 \mathrm{~cm}\)
D. \(17 \mathrm{~cm}\)

Question 523:

Non-luminous objects can be seen because they ____________

A. Are polished
B. Are near
C. Reflect light
D. Emit light

Question 524:

The correct unit of density is ____________

A. \(\mathrm{Kgm}^{-3}\)
B. \(\mathrm{Kgm}^{-1}\)
C. \(\mathrm{Kgm}^{3}\)
D. \(\mathrm{Kgm}^{-2}\)

Question 525:

The motion of smoke of particles from a chimney is typical of ____________

A. Oscillatory motion
B. Rotational motion
C. Circular motion
D. Random motion