In a closed box if you say hello, the so...

In a closed box if you say hello, the sound heard will be Hellooooo….. What does it mean?

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NCERT BANGLISH-SOUND-Think and Discuss

Do compressions and rarefactions in sound wave travel in same directio...
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Does the frequency of sound waves depend on the medium in which it tra...
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The frequency of source of sound is 10Hz. How many times does it vibra...
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Gently strike a hanging bell (temple bell) and try to listen to the so...
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During a thunderstorm if you notice a 3 second delay between the flash...
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Two girls are playing on identical stringed instruments. The strings o...
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What change would you expect in the characteristic of a musical sound ...
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What could be the reason for better reflection of sound by rough surfa...
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Why is an echo weaker than the original sound ?
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In a closed box if you say hello, the sound heard will be Hellooooo….....
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What is the advantage of having conical openings in Horns, megaphones ...
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Why do we put cushions on the chairs, carpet on the floor, straw mater...
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