Questions
The driver of a car travelling with speed 30 metres per second towards a hill sounds a horn of frequency 600 Hz. If the velocity of sound in air is 330 metres per second, the frequency of the reflected sound as heard by the driver is
detailed solution
Correct option is A
From the figure, it is clear that Frequency of reflected sound heard by the driver.n'=n v−(−vo)v−vs=n v+vov−vs=n v+vcarv−vcar=600 330+30330−30=720 Hz.Talk to our academic expert!
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An observer is moving towards the stationary source of sound, then
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