Propagation of Sound Waves - Jamb Physics Past Questions and Answers

Question 36:

• JAMB 2021

A boy standing some distance from the foot of a tall cliff claps his hands and hears an echo 0.5s later. If the speed of sound is 340ms\(^{-1}\), how far is he from the cliff?

A. 680m
B. 170m
C. 34m
D. 85m

Question 37:

• JAMB 2021

A source of sound produces waves in air of wavelength 1.65m. If the speed of sound in air is 330ms\(^{-1}\), the period of vibration in air is?

A. 200
B. 0.005
C. 0.5
D. 0.02