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A source of sound emitting a frequency 6...

A source of sound emitting a frequency 660 Hz is moving counter-clockwise in a circular path of radius 2 metres with an angular velocity 15 rad/s. A recorder at a distance from the source is moving simple harmonically along a straight line with an amplitude 2 metres. The frequency of SHM is `(15)/(2pi)` per second. The arrangement is shown in figure. When the source is at point A the detector is at D. Find the maximum and minimum frequencies recorded. Velocity of sound in air at this temperature can be taken as 300 m/s

A

806 Hz, 540 Hz

B

733.4 Hz, 600 Hz

C

680 Hz, 380 Hz

D

580 Hz, 280 Hz

Text Solution

Verified by Experts

The correct Answer is:
B
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