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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
Name the type of waves which are used by astronauts to communicate with one another on moon (or in outer space).
The frequency of the sound emitted by the loudspeaker is 1020 Hz. Calculate the wavelength of the sound wave in air in cm where its velocity is 340 m/s.
Through which of the following materials can sound travel? wood, air, water, steam, ice, hydrogen, steel, diamond.
Sound travels in air :
Fill in the blank and explain.
Sound does not travel through ______.
Flash of lightning reaches earlier than the sound of thunder. Explain the reason.
How does the speed of sound in air vary with temperature?
Write the answer in your own words.
Explain with the help of practical examples how sound is propagated through solids.
Can sound propagate in solids and liquids?
The amount of water vapour present in the air is known as ______.
