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A large auditorium has a curved back. Ex...

A large auditorium has a curved back. Explain.

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This is done to send sound waves parallel so that these waves can be heard over a large distance. The wall is so curved that the speaker is at the focus of this curved surface. Obviously, the sound waves emitted by the speaker after reflection from the curved surface become parallel.
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MTG IIT JEE FOUNDATION-SOUND-Exercise (Subjective Problems) Short Answer Type
  1. The sound of an explosion on the surface of a lake is heard by a boat...

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  2. The sound of an explosion on the surface of a lake is heard by a boat...

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

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  4. Two waves are shown below. Which of the two corresponds to lower decib...

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

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  6. (a) A sound wave travelling in a medium is represented . (i) Which l...

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  7. A sound wave travelling in a medium is represented as shown in the fig...

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  8. (a) A sound wave travelling in a medium is represented . (i) Which l...

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  9. A big explosion on the moon cannot be heard on the earth because

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

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  11. A narrow sound pulse (for example, a short pip by a whistle) is sent a...

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  12. A narrow pulse (for example, a short pip by a whistle) is sent across ...

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  13. A snapshot is taken of a periodic wave travelling on a string as shown...

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  14. The frequency of a source of sound is 100 Hz. How many times does it v...

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  15. When we nibble at a rusk, we hear a noise that is simply deafening. Bu...

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  16. A sonar device on a submarine sends out a signal and receives an echo ...

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  17. Waves of higher frequencies are used for cleaning hard-to-reach places...

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  18. Waves of higher frequencies are used for cleaning hard-to-reach places...

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  19. Waves of higher frequencies are used for cleaning hard-to-reach places...

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  20. An observer notes that there is a 6 second interval between seeing a f...

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