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What kind of waves help the bats to find...

What kind of waves help the bats to find their way in dark?

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MAXIMUM PUBLICATION-WAVES-EXERCISE
  1. What is the range of frequency of audible sound?

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  2. Why does sound travel faster in iron than in air?

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  3. What kind of waves help the bats to find their way in dark?

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  4. In which gas,hydrogen and oxygen will the sound have greater velocity?

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  5. Why transverse waves can not setup in gas?

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  6. What is the effect of presure on the velocity of sound waves?

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  7. Why bells are made up of metal and not wood?

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  8. What is the velocity of sound in perfect rigid body?

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  9. In resonance column experiment, tuning fork is used. a) Name the type ...

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  10. Why bells of colleges and temple are of large size?

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  11. A sound wave of frequency 400Hz is travelling in air at a speed of 320...

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  12. A string fixed one end is suddenly brought in to up and down motion.a)...

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  13. A sonometer wire of length 30 cm vibrates in the second overtone A v...

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  14. A horizontal metal wire is fixed on a state of tension between two ver...

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  15. A horizontal metal wire is fixed on a state of tension between two ver...

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  16. A horizontal metal wire is fixed on a state of tension between two ver...

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  17. When a stone is dropped into the river,certain waves are formed on its...

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  18. When a pebble is dropped,to the surface of water,certain waves are for...

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  19. When a pebble is dropped,to the surface of water,certain waves are for...

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  20. The speed of a wave along a stretched string depends only on the tensi...

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