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A train approaches a stationary observe at a speed of 75 kilometres per hour sounding a whistle of frequency 1000 Hz. What will be the apparent frequency of the whistle to the observes? Velocity of sound `= 332 m s^(-1)`

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The correct Answer is:
`1067 Hz`
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NN GHOSH-DOPPLER EFFECT-EXERCISES
  1. A train approaches a stationary observe at a speed of 75 kilometres pe...

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  2. A train is whistling while approaching a tunnel at a speed of 36 kmph....

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  3. An observer on a railway station platform observed that as the train p...

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  4. Two aeroplanes are approaching each other and their velocities are 160...

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  5. A man is standing beside a railway line listening to the whistle of a ...

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  6. Show that Dopple effect is greater when the source approaches the obse...

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  7. The wavelength of the spectral line coming from a star is changed by t...

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  8. A upersonic jet plane of Mach 1.5 is sighted overhead. How far will it...

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  9. Show that the frequency of sound vibrations emitted by a source will a...

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  10. The ratio of the apparent frequencies of the hom of a car when approch...

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  11. Can you go fast enough to have red light appear green ? lambda ("red")...

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  12. A bullet is fired with a speed of 670 ms^(-1). Find the angle made by...

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  13. A sonometer wire under tension of 64 N vibrating in its fundamental mo...

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  14. A receiver and a source of sonic oscillations of frequency v(0) = 2000...

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  15. A train approaching a hill at a speed of 36 kmph sounds a whistle of f...

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  16. A source of sound of frequency 1000 H(Z) moves unifornly along a stra...

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  17. A source of sound of frequency 2000 Hz moves towards a wall velocity u...

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  18. A stationary source sends forth monochromatic (n = 500 Hz) sound. A wa...

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  19. A source of sonic oscillations of frequency n(0) = 1500 Hz moves at ri...

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  20. When a spectral line of wavelength lambda = 0.60 mu m is observed in t...

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