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CHETANA PUBLICATION-Study of Sound-EXERCISE
- Write in short note on SONAR?
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- The unit of frequency is …………… .
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- The normal hearing range for humans is ………… .
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- Sound will not travel through ……….. .
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- SI unit of …………..is Hertz (Hz).
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- The velocity of sound is inversely proportional to the………… .
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- Sound waves with frequency greater than 20 kHz are called……….. .
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- The loudness of a sound depends upon ………… .
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- …../… are used in sonography.
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- The ……….receives the vibrations coming from the membrane and converts ...
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- Sound will not travel through ……….. .
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- SI unit of …………..is Hertz (Hz).
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- The loudness of a sound depends upon ………… .
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- …………are used in sonography.
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- Match the columns:
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- The intensity of reverberation is higher in a closed and empty house.
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- Bats can navigate in dark.
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- Sound travels faster in iron than in air.
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- The roof of a movie theatre and a conference hall is curved. Why?
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- The intensity of reverberation is higher in a closed and empty house.
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- What is an echo? What factors are important to get a distinct echo?
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