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Source and Listener Moving in Different Lines

A vehicle, wi...

Question

A vehicle, with a horn of frequency n, is moving with a velocity of 30 m/s in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency n + n₁. Then n₁ is equal to (take velocity of sound in air as 330 m/s)

A

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B

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C

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D

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Solution

The correct option is D
No Doppler effect, because velocity is perpendicular to line joining vehicle and observer.

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Similar questions

Q. A vehicle, with a horn of frequency n, is moving with a velocity of 30 m/s in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency n + n₁. Then n₁ is equal to (take velocity of sound in air as 330 m/s)

V_{s}

be the speed of the source emitting sound waves,

n

the actual frequency of the source of sound,

V

the speed of the sound in the medium and

n_{1}

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are the fundamental frequencies of three segments into which a string is divided, then the original fundamental frequency n of the string is given by:
If

n_{1}

Q. A vehicle is at rest on a banked road with angle of banking

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N_{1} / N_{2}

n_{1}, n_{2}

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are the fundamental frequencies of three segments of a string of length

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