NEET | 2016Sound WavesHard
Question
A siren emitting a sound of frequency 800 Hz moves away from an observer towards a cliff at a speed of15 ms-1. Then, the frequency of sound that the observer hears in the echo reflected from the cliff is :
(Take velocity of sound in air =330 ms-1)
Options
A.
765 Hz
B.
800 Hz
C.
838 Hz
D.
885 Hz
Solution
f0=800Hz
Vsource=15 m/s
fa =
fa = 838 Hz
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