Question

a source is at origin continuously emitting sound at afrequency of 660hz. the sound travels at 330m/s. a listener is moving along the line X=sqroot of (30000) (X in metre ) in +ve direction at contant speed 20m/s.the frequency of sound observed by listener when he is at Y=-100m is
a)330 sq root of (3) hz
b)sqroot of 20 hz
c)330hz
d) 680hz

Answer 1

@AravindG

Answer 2

@ParthKohli

Answer 3

@Mertsj

Answer 4

This problem can be solved using doppler shift

Answer 5

Apparent frequency can be calculated by using formula if observer is in motion towards the source as f=fo(v+u/v-u)

Answer 6

wat is the answer

Answer 7

680 hz

Answer 8

how is it

Answer 9

@dhawal whenever you use the doppler effect formula only and only the velocity of obsrvr/source in the line joining the observer and source is to be considered...
now try it out you may get the correct ans..;)