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SURA PUBLICATION-ACOUSTICS-ADDITIONAL QUESTIONS & ANSWERS (FILL IN THE BLANKS (COVERS THE WHOLE UNITS))
- SI unit of frequency is .
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- Velocity of sound is in solids.
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- Sound waves are .
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- For louder sound will be greater.
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- To differentiate two sounds is called .
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- The speed of sound is inversely proportional to .
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- When humidity increases, the speed of sound .
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- Reflection of sound is called .
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- The pitch of sound depends on .
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- surfaces are used to focus the sound at particular point.
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- Elliptical surfaces are used in designing .
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- The minimum distance required to hear an echo is
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- To determine the velocity of sound in any medium is used.
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- When source and listener move towards each other the apparent frequenc...
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- When distance between source and listener decreases apparent frequency...
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- The average speed of sound wave in sea water is .
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- The loudness of normal human voice is .
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- The minimum distance required to hear an echo is I/20th part of the ma...
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- The velocity of sound increases when the of the material increases.
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- The speed of sound is inversely proportional to .
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