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.
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
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