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A boy stands at one end of a corridor, b...

A boy stands at one end of a corridor, both the doors of which are closed. When he claps his hands together, the echo of the hand clap continues for a few seconds with decreasing loudness.. Why ?

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It is due to the phenomenon of multiple reflections from both the doors of the cooridor that the echo of the hand clap continues for sometime. The decreasing loudness is due to the absorption of sound by the doors and the walls.
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PRADEEP-SOUND-Short Answer
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  2. A boy stands at one end of a corridor, both the doors of which are clo...

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  3. There are no echoes produced in small living rooms. Explain why echoes...

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  4. The sound of distant horses can br heard by applying the ear to the gr...

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  5. A large auditorium has a curved back. Explain.

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  6. What is the difference between an echo and a reverberation ?

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  7. Where is reverberation desirable and where is this to be avoided ?

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  8. Why do we use upholstered seats in theatres and halls ?

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  9. How can you make a building sound proof ?

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  10. The reverberation time is larger for an empty hall than for a crowded ...

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  11. What is sound ? Discuss the method of its production.

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  12. How is sound propagated through a material medium ? What is wave motio...

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  13. Discuss the role of medium in the propagation of sound.

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  14. How are compressions and rarefactions produced near a source of sound ...

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  15. How can you show that sound waves are longitudinal waves ?

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  16. What are transverse waves ?

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  17. Obtain a relation between speed, frequency and wavelength of a wave.

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  18. What is sonic boom and when is it heard ?

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  19. Distinguish between music and noise.

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  20. Describe an experiment to show that sound waves can be reflected. What...

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