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Answer the following questions: Define ...

Answer the following questions:
Define echo.

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NAVNEET PUBLICATION-STUDY OF SOUND-EXERCISE
  1. Answer the following questions: Adjust the angles of the two tubes ti...

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  2. Answer the following questions:Make two sufficiently long, identical ...

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  3. Answer the following questions: Define echo.

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  4. Answer the following questions: The speed of sound in air at 22^@ C i...

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  5. What is an echo? What factors are important to get a distinct echo?

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  6. Answer the following questions: Study the construction of the Golghum...

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  7. Answer the following questions: What should be the dimensions and the...

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  8. Where and why are sound absorbing materials used?

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  9. To hear the echo distinctly,will the distance from the source of sound...

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  10. When is the reflection of sound harmful?

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

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

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

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  14. Answer the following questions: What is reverberation?

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

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

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  17. Write short note on Ultrasound.

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  18. Write in short note on SONAR?

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  19. Write short note on Reverberation.

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

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