Question

A source emitting a sound of frequency v is placed at a large distance from an observer. The source starts moving towards the observer with a uniform acceleration a. Find the frequency heard by the observer corresponding to the wave emitted just after the source starts. The speed of sound in the medium is v.

Answer 1

Correct Answer - A::B
Required frequency n
`=(v+v_0)/(v-v_s)v=v/(v-at).v`
`=(v.v)/(v-a.(1/(2v))=(2vv^2)/(2vv-a)`