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A train whistling at constant frequency ...

A train whistling at constant frequency is moving towards a station at a constant speed `v`. The train goes past a stationary observer on the station. The frequency `v` of the sound as heard by the observer is plotted as a function of time `t`. Identify the expected curve.

A

B

C

D

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The correct Answer is:
C
The frequency of whistling train decreases as it goes past the stationary observer.
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MTG IIT JEE FOUNDATION-SOUND-Exercise (Multiple Choice Questions) LEVEL - 2
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  9. If man were standing unsymmetrically between parallel cliffs, claps hi...

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  10. A man is watching two trains, one leaving and the other coming in with...

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  11. When two waves of almost equal frequencies v(1) and v(2) reach at a po...

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  12. Blowing a horn of 500 Hz frequency, a car A is moving in the opposite ...

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  13. When a siren of a fire engine approaches an observer at a speed of 10"...

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  15. A source of sound produces wave of 60 cm wavelength. This source is mo...

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  16. A source of sound is rotating in the anticlockwise direction on a circ...

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  17. Two tuning forks, A and B, produce notes of frequencies 258 Hz and 262...

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  18. A train whistling at constant frequency is moving towards a station at...

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