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The speed of sound is inversely proporti...

The speed of sound is inversely proportional to __________ .

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Speed of sound in a gas in proportional to ………

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SURA PUBLICATION-ACOUSTICS-ADDITIONAL QUESTIONS & ANSWERS (FILL IN THE BLANKS (COVERS THE WHOLE UNITS))
  1. The minimum distance required to hear an echo is I/20th part of the ma...

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  2. The velocity of sound increases when the of the material increases.

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  3. The speed of sound is inversely proportional to .

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  4. The of sound in a gas increases with the increase in temperature.

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  5. The velocity of sound changes by when the temperature changes by 1^@C...

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  6. The angle of incidence is equal to the angle of .

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  7. The and refraction of sound is similar to the reflection of light.

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  8. Sound waves that travel towards the reflecting surface are called the ...

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  9. The point of incidence and the point of reflection is the on the refl...

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  10. A perpendicular line drawn at the point of incidence is called the .

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  11. In ear trumpet, the sound enters into the with more intensity.

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  12. The apparent change in frequency first observed and explained by .

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  13. An is emitted by a source attached to a police car.

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  14. Full form of RADAR .

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  15. Expansion of SONAR .

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  16. is the frequency of the sound as heard by the listener.

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  17. The product of the time period of a wave and its frequency is .

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  18. In ordinary talk, amplitude of vibration is approximately .

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  19. If the time period of a wave increases then its frequency will .

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  20. In a whispering hall, the speech of a person standing in one focus can...

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