Question

a) Name four ways in which sound can be produced. 

b) Calculate the speed of a sound wave whose frequency is 2 kHz and wavelength 65 cm

Answer 1

a) Following are the ways in which sound can be produced: 

i) by vibrating the strings 

ii) by vibrating membranes 

iii) by vibrating the plates 

b) Speed of sound wave = (frequency)(wavelength) 

Frequency, f = 2 kHz 

Wavelength, λ = 65 cm = 0.65 m 

Therefore, speed = 1300 m/s