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Why can an echo not be heard at every pl...

Why can an echo not be heard at every place?

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CHETANA PUBLICATION-SOUND-EXERCISE
  1. Choose the correct option? The distance between two consecutive crest...

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  2. Choose the correct option? The wave number of two sound waves are 0....

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  3. Choose the correct option? The echo and the original sound differ in...

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  4. Choose the correct option? The minimum distance between the source o...

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  5. Choose the correct option? The Doppler's Effect is not applicable

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  6. The velocity of sound islargest in

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  7. The loudness of a sound depends upon ………… .

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  8. Choose the correct option? The minimum distance between the source o...

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  9. Define amplitude?

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  10. On what does the speed of mechanical waves depend?

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  11. Define Doppler effect for sound waves?

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  12. Wave motion is doubly periodic. Explain.

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  13. What isthe effect of humidity of air on velocity of sound?

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  14. Why can an echo not be heard at every place?

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  15. The speed of sound in air is 330m//s and that in glass is 4500m//s. Wh...

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  16. An echo sounder in a fishing boat receives an echo from a shoal of fis...

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  17. State common properties between Doppler effect of sound and light.

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  18. A police car travels towards a stationary observer at a speed of 15 m/...

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  19. State medical applications of acoustics?

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  20. Derive the relation between velocity, frequency and wavelength of a wa...

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