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An engine blowing a whistle of frequency...

An engine blowing a whistle of frequency 133 Hz moves with a velocity of `60 ms^(-1)` owards a hill from which an echo is heard. The frequency of the echo heard by the driver (Velocity of sound in air=340 ms^(-1)`)

A

`190 Hz`

B

161 Hz

C

133 Hz

D

113 Hz

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TARGET PUBLICATION-Sound-Exercise
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  7. A train A is travelling at a speed of 108 km hr^(-1). The train approa...

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  9. An engine is moving on a circular track with a constant speed. It is b...

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  10. An engine driver moving towards a wall with a velocity of 60 m//s emit...

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  11. An object producing a pitch of 600 Hz approaches a stationary person i...

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  12. When both source and listener approach each other with a velocity equa...

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  13. The difference between the apparent frequency 71. of a source of sound...

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  14. If sound velocity is v, velocity of observer is v0 and velocity of sou...

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  15. Consider a source of sound S and an observer P. The frequency of sound...

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  16. A car is travelling with a velocity of 40 m//s towards a source of sou...

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  17. What should be the velocity of sound from a source w.r.t. an observer,...

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  18. The frequency of a whistle of the engine of an express train moving wi...

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  20. An observer starts moving with uniform acceleration ‘a’ towards a stat...

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