Question

A siren emitting a sound of frequency 800 Hz moves away from an observer towards a cliff at a speed of 15ms⁻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)(a) 765 Hz(b) 800 Hz(c) 838 Hz(b) 885 Hz

Answer 1

$<b>$

Option B is Correct

Answer 2

hears in the echo reflected from the cliff is: 800 Hz