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A whistle giving out $450 H z$ approaches a stationary observer at a speed of $33 m / \sec$ . The frequency heard by the observer in $H z$ is given velocity of sound=330 $m s^{- 1}$

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detailed solution

Correct option is D

VS=33 m/sec →VS O Source observer V0=0 ⇒n1=nV−V0V−VS =450VV−33 =450330330−33 =500 Hz

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A whistle giving out 450 Hz approaches a stationary observer at a speed of 33 m/sec . The frequency heard by the observer in Hz is given velocity of sound=330 ms-1

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A whistle giving out $450 H z$ approaches a stationary observer at a speed of $33 m / \sec$ . The frequency heard by the observer in $H z$ is given velocity of sound=330 $m s^{- 1}$