Figure shows a source of sound moving along the X-axis at a speed of `22 m s^-1` continuously emitting a sound of frequency 2.0 kHz which travels in air at a speed of `330 in s^-1`. A listener Q stands on the Y-axis at a distance of 330 m from the origin. At t = 0, the source crosses the origin P. (a) When does the sound emitted from the source at P reach the listener Q 9 (b) What will be the frequency heard by the listener at. this instant 9 (c) Where will the source be at this instant ?
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Answer

A, B, C, D

Explanation

Here `v=22ms^-5`
`n2kHz, v_(air)=330ms^-1 `
a. since, ` S=V_nt`
`rarr g=330/330=1sec`
b. `n'=2kHz`
(because frequency does not deend on distance).
c. S=22 m away from P at x-axis