A sound source, emitting sound of constant frequency, moves with a constant speed and crosses a stationary observer. The frequency (n) of sound heard by the observer is plotted against time (t). Which of the following graphs represents the

Question

A sound source, emitting sound of constant frequency, moves with a constant speed and crosses a stationary observer. The frequency (n) of sound heard by the observer is plotted against time (t). Which of the following graphs represents the correct variation?

Quantrex Academy · Accepted Answer

Correct answer: 3

( [ source ] V_s Observer velocity =0 ) ( when Approaching = ^n [ v V-V_s ] ) when Its going away (= ^n [ V V+V_s ] )

A sound source, emitting sound of constant frequency, moves with a constant speed and crosses a stationary observer. The frequency (n) of sound heard by the observer is plotted against time (t). Which of the following graphs represents the correct variation?

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