Physics-
General
Easy
Question
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 15rad/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 
per second. The arrangement is shown in figure. When the source is at point 
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
- 870 Hz,480 Hz
- 600 Hz,733.4 Hz
- 680 Hz,380 Hz
- 580 Hz,280 Hz
The correct answer is: 600 Hz,733.4 Hz
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