A sound source is moving on a circular path of radius R with constant angular speed ` omega ` in anticlockwise direction and emits a frequency n.
An observer performs simple harmonic along the path QPR with time period T = ` ( 2pi ) /( omega ) ` as shown in the figure. If at t = 0 source is at A and observer is at Q and assume OP is very large as compare to radius R and QP, then -

Options

A. Observer will hear maximum frequency at P if source is at B.
B. Observer will hear maximum frequency at P if source is at D
C. Observer will hear maximum frequency at Q if source is at B
D. Observer will hear maximum frequency at Q if source is at D

Answer

B