Physics Past Questions and Answers

Which of the following is NOT an example of a percussion instrument?

A Bell
B Drum
C Flute
D Gong
E Xylophone

Question 227:

The time t₁, t₂ and t₃ for 20 complete oscillations of a simple pendulum experiment are 32.0s, 34.6s and 35.5s respectively. Calculate the mean period of the pendulum.

A 1.60s
B 1.70s
C 1.73s
D 1.78s
E 5.11s

Question 228:

Calculate the magnitude of the electric field intensity in vacuum at a distance of 25cm from a charge of 5 × 10^-3C. [Take 1/4πε₀]

A 7.2 × 108NC^-1
B 1.8 × 108NC^-1
C 5.6 × 108NC^-1
D 3.6 × 108NC^-1
E 1.5 × 106NC^-1

Question 229:

The temperature at which the water vapour present in the air is just enough to saturate the air is the ____________ point.

A Boiling
B Critical
C Dew
D Ice
E Steam

Question 230:

Which of the following statements is true of nuclear fission?

A Heavy nuclei combine to form new element
B Protons are used in bombarding heavy nucleus
C The sum of the masses of the products is greater than the mass of the original substance
D Two light nuclei are made to combine to form a heavy nucleus
E Very large amount of energy is released.