Waves - Jamb Physics Past Questions and Answers

Question 26:

• JAMB 1991

A man hears his echo from a nearby hill 2s after he shouted. If the frequency of his voice is 260Hz and the wavelength is 1.29m, how far away is the hill?

A. 330.0m
B. 335.4m
C. 660.0m
D. 670.8m

Question 27:

• JAMB 1992

The equation of a wave is y = 0.005 sin[x(0.5X - 200t)] where x and y are in meters and t is in seconds. What is the velocity of the wave?

A. 4000ms^-1
B. 400ms^-1
C. 250ms^-1
D. 40ms^-1

Question 28:

• JAMB 1992

Which of the following characteristics of a wave is used in the measurement of the depth of the sea?

A. Diffraction
B. Interference
C. Refraction
D. Reflection

Question 29:

• JAMB 1993

The relationship between L and the wavelength I of the stationary wave is

A. 2L = \(\lambda\)
B. L = \(\lambda\)
C. L = \(\frac {\lambda}{3}\)
D. 4L = 3 \(\lambda\)

Question 30:

• JAMB 1993

Determine the distance between the consecutive antinodes XX if the wavelength is 60cm

A. 15cm
B. 30cm
C. 60cm
D. 120cm