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प्रश्न
State one observation from everyday life which shows that sound travels much more slow than light.
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
Suppose you and your friend are on the moon. Will you be able to hear any sound produced by your friend?
Cite an experiment to show that sound needs a material medium for its propagation.
Out of solids, liquids and gases :
(a) in which medium sound travels slowest?
(b) in which medium sound travels fastest?
Which of the following terms apply to sound waves in air and which to water waves?
Transverse, Rarefaction, Trough, Crest, Compression, Longitudinal
Explain why, a ringing bell suspended in a vacuum chamber cannot be heard outside.
Why cannot a sound be heard on the moon? How do astronauts talk to one another on the surface of moon?
Flash of lightning reaches earlier than the sound of thunder. Explain the reason.
Name the Sound of the Frequency Given Below:
45 kHz
In any medium, as the ______ increases, the speed of sound also increases.
The amount of water vapour present in the air is known as ______.
