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A table is revolving on its axis at 5 re...

A table is revolving on its axis at `5` revolutions per second. A sound source of frequency `1000 Hz `is fixed on the table at `70 cm` from the axis. The minimum frequency heard by a listener standing at a distance from the table will be (speed of sound `=352m//s`).

A

`1000Hz`

B

`1066Hz`

C

`941Hz`

D

`352Hz`

Text Solution

Verified by Experts

The correct Answer is:
C
For source `v_S=romega=0.70xx2pixx5=22m//sec`
Minimum frequency is heard when the source is
receding the man. It is given by `n_(min)=n(v)/(v+v_S)`
`1000xx(352)/(352+22)=941Hz`
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