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Reflection of sound is called ....

Reflection of sound is called _________ .

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(I) Repetition of sound produced by the reflection of sound waves from a wall is echo. (II) In a closed room, the sound is repeatedly reflected from the walls and it is heard even after the sound source is ceased, it is called reverberation? Which one is correct?

SURA PUBLICATION-ACOUSTICS-ADDITIONAL QUESTIONS & ANSWERS (FILL IN THE BLANKS (COVERS THE WHOLE UNITS))
  1. The speed of sound is inversely proportional to .

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  2. When humidity increases, the speed of sound .

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  3. Reflection of sound is called .

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  4. The pitch of sound depends on .

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  5. surfaces are used to focus the sound at particular point.

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  6. Elliptical surfaces are used in designing .

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  7. The minimum distance required to hear an echo is

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  8. To determine the velocity of sound in any medium is used.

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  9. When source and listener move towards each other the apparent frequenc...

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  10. When distance between source and listener decreases apparent frequency...

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  11. The average speed of sound wave in sea water is .

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  12. The loudness of normal human voice is .

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  13. The minimum distance required to hear an echo is I/20th part of the ma...

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

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  15. The speed of sound is inversely proportional to .

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

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

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

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

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

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