Propagation of Sound Waves - Jamb Physics Past Questions and Answers

Question 26:

• JAMB 2011

A cannon is fired from town X,after how long is the sound heard at a town Y 4.95 km away?
[velocity of sound in the air = 330 ms^-1]

A. 30 s
B. 10 s
C. 10 s
D. 15 s

Question 27:

• JAMB 2012

If a sound wave goes from a cold air region to a hot air region, its wavelength will

A. Increase
B. Decrease
C. Decrease then increase
D. Remain constant

Question 28:

• JAMB 2012

A plane sound wave of frequency 85.5Hz and velocity 342ms^-1 is reflected from a vertical wall. At what distance from the wall does the wave have antinode?

A. 2m
B. 4m
C. 1m
D. 3m

Question 29:

• JAMB 2014

A boy receives the echo of his clap reflected by a nearby hill 0.8s later. How far is he from the hill?

A. 528m
B. 66m
C. 136m
D. 264m

Question 30:

• JAMB 2018

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