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प्रश्न
State one observation from everyday life which shows that sound travels much more slow than light.
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उत्तर
During rainy season, it is a common observation that the flash of lightning is seen first while the sound of thunder is heard a little later. This is because light (3 × 108 m/s) travels faster than sound (340 m/s) in air.
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संबंधित प्रश्न
Describe with the help of a diagram, how compressions and rarefactions are produced in air near a source of sound.
Fill in the blank.
Sound requires a ________ for propagation.
Name one solid, on liquid and one gas through which sound can travel.
Is the speed of sound more in water or in steel?
Sound travels in air :
Explain the experiment, with a neat diagram, to prove the following:
'Sound needs material medium for propagation.'
State two properties of medium on which the speed of sound in it depends.
What is the approximate value of the speed of sound in air at N.T.P.?
Explain the effect of density on the speed of sound.
The small to and fro motion is called vibration.
