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What are 'beats'?...

What are 'beats'?

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Beats `:` When two sound notes of nearly frequency travelling in the same direction and interfere to produce waxing and waning of sound at regular intervals of time is called 'Beats'.
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-WAVES-VERY SHORT ANSWER QUESTIONS
  1. Distinguish between transverse and longitudinal waves

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  2. What are the parameters used to describe a progressive harmonic wave ?

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  3. Obtain an expression for the wave velocity in terms of these paramete...

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  4. Using dimensional analysis obtain an expression for the speed of trans...

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  5. Using dimensional analysis obtain an expression for the speed of trans...

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  6. What is the principle of superposition of waves ?

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  7. Under what conditions will a wave be reflected ?

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  8. What is the phase difference between the incident and reflected wave w...

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  9. What is the stationary or standing wave ?

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  10. What do you understand by the terms 'node' and 'antinode ' ?

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  11. What is the distance between a node and an antinode in a stationary wa...

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  12. What do you understand by'natural frequency 'or'normal mode of vibrati...

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  13. What are harmonics?

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  14. A string is stretched between two rigit supports.What frequencies of ...

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  15. The air column in a long tube, closed at one end, is set in vibration...

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  16. If the air column in a tube, open at both ends, is set in vibration , ...

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  17. What are 'beats'?

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  18. Write downan expression beat frequency and explain the terms there in...

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  19. What is 'Doppler effect' ?

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  20. Write down an expression for the observer frequency when both source a...

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