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प्रश्न
Why are the ceilings of concert halls made curved ? Draw a labelled diagram to illustrate your answer.
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उत्तर
The ceilings of the concert hall are made curved so that sound, after reflection from the ceiling, reaches all parts of the hall and the speech can be easily heard even by the person sitting at a considerable distance. The curved surface of the ceiling reflects the sound of the speaker toward the audience and hence prevents the spreading of sound in various directions. Due to this, sound is distributed uniformly throughout the hall and even the person sitting at the back of the hall can hear the speech easily.
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संबंधित प्रश्न
What is meant by an echo?
Name three devices which work on the reflection of sound.
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State two conditions necessary for hearing an echo.
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To hear an echo, the minimum distance of the obstacle from the source of sound must be ______.
Answer the following question in your own words.
What factors are important to get a distinct echo?
