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Why all the stringed instruments are pro...

Why all the stringed instruments are provided with hollow boxes?

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So as to increase the surface area of vibration, which increases the loudness of sound produced and hence, increases the intensity of sound.
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MODERN PUBLICATION-WAVES-REVISION EXERCISES
  1. What do you mean by reflection of sound waves ? What are various appli...

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  2. State the principle of superposition of waves. Derive an expression fo...

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  3. Why all the stringed instruments are provided with hollow boxes?

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  4. Does the speed of light waves also depend on the temperature like soun...

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  5. While going up in the atmosphere, how the velocity of sound changes ?

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  6. What is meant by beats? Discuss graphical method of beats.

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  7. What would a person hear, if he moves away from a source of sound with...

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  8. Set up a relation between speed of sound in a gas and root mean sqare ...

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  9. What will be the effect on the fundamental frequency of a closed organ...

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  10. The frequency of sound emitted by two wires is 250 Hz each. To hear 10...

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  11. Discuss some charcteristics of standing waves.

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  12. Establish relation between particle velocity and wave velocity.

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  13. Describe the factors on which the pitch of a tuning fork depends.

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  14. Show that the Doppler effect in sound is asymmetric.

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  15. How do you use the phenomenon of beats for determination of unknown f...

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  16. Deduce the relations for (a) particle velocity (b) particle accelerati...

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  17. Obtain the equation of a plane progressive simple harmonic wave.

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  18. Derive an expression for the speed of transverse waves on a stretched ...

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  19. Discuss the effect of (i) density (ii) pressure (iii) temperature (iv)...

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  20. Discuss the formation of stationary waves in a string using graphical ...

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