Physics-
General
Easy
Question
A square ground of side 
has a circular running track of radius a/2 with its centre coinciding the centre of the ground. A man is running on the track with an angular velocity 
while a car is moving on a road adjacent to ground as shown in the figure. The car moves in such away that the car, the man and the centre of the ground always lie on the same straight line. If a source of sound of frequency v=300 Hz is being placed at the centre of the ground find the minimum frequency received by the man in the car. Assume velocity of sound in air is v=330 m/s.
- 200 Hz
- 210 Hz
- 190 Hz
- None
The correct answer is: 200 Hz
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