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Answer the following questions: Explain...

Answer the following questions:
Explain how a bat can find its way in the dark.

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NAVNEET PUBLICATION-STUDY OF SOUND-EXERCISE
  1. To hear the echo distinctly,will the distance from the source of sound...

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  2. When is the reflection of sound harmful?

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  3. Answer the following questions: Explain how a bat can find its way in...

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  4. We cannot hear the echo produced in a classroom.

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  5. Answer the following questions: Sometimes reflections of sound may be...

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  6. Answer the following questions: What is reverberation?

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  7. Answer the following questions: Why are ceilings of concert halls and...

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  8. Answer the following questions: How will you reduce reverberation in ...

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  9. Write short note on Ultrasound.

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  10. Write in short note on SONAR?

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  11. Write short note on Reverberation.

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  12. Write short note on Sonogaphy. How is it misused.

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  13. The roof of a movie theatre and a conference hall is curved.

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  14. The intensity of reverberation is higher in a closed and empty house.

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  15. We cannot hear the echo produced in a classroom.

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  16. Solve the following example: A sound wave passes over a fixed point i...

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  17. Solve the following example: If the time period of a wave if 0.004s, ...

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  18. Solve the following example: A sound wave having certain frequency tr...

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  19. A sound wave has frequency 320 Hz and wavelength 0.25 m. How much dist...

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  20. Solve the following example: A source of sound has frequency 1000Hz. ...

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