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What are multiple echoes ? Give two of t...

What are multiple echoes ? Give two of their practical applications.

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PRADEEP-SOUND-Mock Test (Sec - A)
  1. The speed of sound in air on a summer day is 350 m//s. What is the air...

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  2. How far does sound travel in air when a tuning fork of frequency 560 H...

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  3. (a) A person listens to a source of sound of frequency 350 Hz standing...

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  4. (a) When cars begin to move in a long line of stalled traffic, the mot...

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  5. (a) In a quiet room, put thumbs in your ears firmly and listen. You he...

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  6. What do you mean by pitch or frequency ? What is difference between th...

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  7. Why 'pligging up" and 'popping" of the ears is frequently experienced ...

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  8. A nerve pulse is a wave pulse that travels along a nerve, typically at...

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  9. Sound propagating through air at 30^@ C passes through a vertical cold...

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  10. The speed of sound in human tissue is of the order of 1500 m//s. A 3.5...

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  11. You drop a stone from rest into a well that is 7.35 m deep. How long d...

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  12. The speed of surface waves in water decreases as the water becomes sha...

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  13. A long nail has been driven halfway into the side a barn. How should y...

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  14. Today our life is richer and fuller of music than it was yesterday, an...

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  15. Explain briefly the structure of human ear from auditory aspect only.

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  16. What are multiple echoes ? Give two of their practical applications.

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  17. (a) Many animals can move the pinna (or ear flap) in order to focus th...

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  18. (a) What is the relation between loudness and frequency ? (b) What i...

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  19. (a) A sound wave travelling in a medium is represented . (i) Which l...

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  20. Draw a curve showing density or pressure variations with respect to di...

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