Question

if 10 waves are produced per second,what is the frequency in Hertz?​

Answer 1

As observer is at rest so u

O

=0

Since the source moves towards cliff, i.e., effectively the source moves towards the observer (the sound being heard through echo), so u

S

taken as −u

S

=15 m/s

Thus, f

′

=

v−u

S

v

f=

330−15

330

800=838 Hz