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Two express trains moving at 100 kilomet...

Two express trains moving at 100 kilometre per hour are travelling towards each other while one of them is whistling continuously. If the frequency of the note is 1000 Hz, find the apparent pitch to an observer in the other train (a) before the trains pass by each other and (b) after they have passed each other. (Velocity of sound in air `= 340 m//s`)

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NN GHOSH-DOPPLER EFFECT-EXERCISES
  1. Two express trains moving at 100 kilometre per hour are travelling tow...

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  2. A train approaches a stationary observe at a speed of 75 kilometres pe...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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