Post Utme Physics Past Questions and Answers

Question 1246:

Which of the following phenomena cannot be explained by the molecular theory of matter?

A. Evaporation
B. Expansion
C. Conduction
D. Radiation

Question 1247:

The most likely measurement of length of an object using a Vernier caliper is ____________

A. \(3.0 cm\)
B. \(3.3 cm\)
C. \(3 .33 cm\)
D. \(3.333 cm\)

Question 1248:

If \(21 g\) of alcohol of density \(0.7 gcm ^{-3}\) is mixed with \(10 g\) of water, what would be the density of the resulting mixture?

A. \(780 gcm ^{-3}\)
B. \(0.78 gcm ^{-3}\)
C. \(30 gcm ^{-3}\)
D. \(10 gcm ^{-3}\)

Question 1249:

For a particle having an \(x\) coordinate that varies in time according to the expression \(x=4 t-2 t^{2}\). The instantaneous velocity of the particle at
\(t=2.5 s\) is ____________

A. \(12 m / s\)
B. \(6 m / s\)
C. \(0 m / s\)
D. \(10 m / s\)

Question 1250:

A long-jumper leaves the ground at an angle of \(20^{\circ}\) above the horizontal and at a speed of \(11 m / s\). How far does lift jump in the horizontal direction?

A. \(0.384 m\)
B. \(7.94 m \)
C. \(8.45 m\)
D. \(0 m\)