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प्रश्न
Flash of lightning reaches earlier than the sound of thunder. Explain the reason.
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उत्तर
This happens because the light travels much faster than sound.
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संबंधित प्रश्न
Select the correct alternative :
Sound cannot travel in
Can sound travel through a vacuum ? Describe an experiment to explain your answer.
Sound travels in air :
Explain the experiment, with a neat diagram, to prove the following:
'Sound needs material medium for propagation.'
What is the approximate value of the speed of sound in air at N.T.P.?
What are the requisites of the medium for the propagation of sound? Briefly, explain them.
Can we hear sounds of frequencies:
Less than 20 Hz
Ruthvik and Ruha hear a gunshot 2 second after it is fired. How far away from the gun they are standing? (Speed of sound in air is equal to 330ms-1)
Sound cannot travel in ______.
In any medium, as the ______ increases, the speed of sound also increases.
