Two different sound sources `s_(1) and s_(2)` have frequencies ratio 1:2. Source s, is approaching towards an observer and `s_(2)` is receding from the same observer. Speeds of both `s_(1) and s_(2)` are the same and equal to v. speed of sound in air in 300 m/s. If no beats are heard by the observer the value of V is 1

Options

A. 125 m/s
B. 100 m/s
C. 75 m/s
D. 50 m/s

Answer

B