Questions
A source of sound and listener are approaching each other with a speed of 40 m/s. The apparent frequency of note produced by the source is 400 cps. Then, its true frequency (in cps) is (velocity of sound in air = 360 m/s)
detailed solution
Correct option is D
n'=n v+vOv−vS n⇒400=n 360+40360−40⇒n=320 cpsTalk to our academic expert!
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