Questions
A source of sound produces waves of wavelength 60 cm when it is stationary. If the speed of sound in air is 320 and source moves with speed 20 , the wavelength of sound in the forward direction will be nearest to
detailed solution
Correct option is A
λ'=(c−vs )f=c−vs c.λ=320−20320.60 cm = 56 cm.Talk to our academic expert!
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A person going away from a gate keeper on a scooter at a speed of 10 m/s blows a horn of frequency 600 Hz. If speed of sound is 340 m/s find the apparent frequency heard by the gatekeeper.
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