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An engine is moving on a circular track ...

An engine is moving on a circular track with a constant speed. It is blowing a whistle of frequency `500 Hz`. The frequency received by an observer standing stationary at the centre of the track is

A

`500 Hz`

B

more than `500 hz`

C

less than `500 Hz`

D

more or less than `500 Hz` depending on the actual speed of the engine

Text Solution

Verified by Experts

The correct Answer is:
A

Component of `v_(s)` along `SO = 0`
No Doppler effect
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CP SINGH-SOUND WAVES-Exercises
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  2. In previous question, what would be the apparent wavelengths in front ...

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  7. A whistle revolves in a circle with an angular speed of 20 rad//sec us...

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  9. A train moves towards a stationary observer with speed 34 m//s. The tr...

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  10. A siren placed at a railway platform is emitting sound of frequency 5 ...

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  11. A racing car moving towards a cliff, sounds its horn. The driver obser...

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  12. A vehicle , with a horn of frequency n is moving with a velocity of 30...

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  13. Two cars are moving on two perpendicular road towards a crossing with ...

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  14. A band playing music at a frequency f is moving towards a wall at a sp...

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  15. A sound wave of frequency f travels horizontally to the right. It is r...

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  16. A motor cycle starts from rest and accelerates along a straight path a...

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  17. A star is moving away from the earth with a velocity of 100 km//s. If ...

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  18. The apparent wavelength of the light from a star, moving away from the...

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  19. The frequency of a radar is 780 MHz. After getting reflected from an a...

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  20. Define Mach number

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