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 = 350(330-15)800=330315×800
fa = 838 Hz

Create a free account to view solution

View Solution Free
Topic: Sound Waves·Practice all Sound Waves questions

More Sound Waves Questions

A sound waves is travelling towards right and its S-t graph is as shown for x = 0.What will be density vs x graph at t =...A siren placed at a railway platform is emitting sound of frequency 5 kHz. A passenger sitting in a moving train A recor...The displacement y of a particle executing periodic motion is given by Y = 4 cos2 sin(1000t) This expression may be cons...An organ pipe closed at one has fundamental frequency of 1500 Hz. The maximum number of overtones generated by this pipe...A boat at anchor is rocked by waves whose crests are 100m apart and velocity is 25m/s. The boat bounces up once in every...