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FULL MARKS-SOUND-EXERCISE (Fill in the blanks)
- Sound is a …………….. Wave and needs a material medium to travel.
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- is the number of vibrations in the medium in one second.
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- The velocity of sound in solid is …………… than the velocity of sound in ...
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- Vibration of object produces ……………… .
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- Loudness is proportional to the square of the ………………. .
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- ……………… is a medical instrument used for listening to sounds produced i...
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- The repeated reflection that results in persistence of sound is called...
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