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A small source of sound moves on a circl...


A small source of sound moves on a circle as shown in the figure and an observer is standing on O. Let `n_1`,`n_2` and `n_3` be the frequencies heard when the source is at A, B and C respectively. Then

A

`n_(1) gt n_(2) gt n_(3)`

B

`n_(1)=n_(2)gtn_(3)`

C

`n_(2) gt n_(3) gt n_(1)`

D

`n_(1) gt n_(3) gt n_(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Source has velocity towards the observer at B, away from observer at A and perpendicular to the line joining source and observer at C.
`therefore V_(2) gt V_(3) gt V_(1)" "therefore V_(3)=V_(0)`
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