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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
Fill in the blank.
Sound can travel in a ______
Name the type of waves which are used by astronauts to communicate with one another on moon (or in outer space).
Name one solid, on liquid and one gas through which sound can travel.
Give scientific reasons:
As the sound wave propagates from one place to the other in air, the air itself is not required to move from one place to the other.
Describe in brief, with the aid of a lebelled diagram, an experiment to demonstrate that a material medium is necessary for propagation of sound.
State two properties of medium on which the speed of sound in it depends.
Assuming the speed of sound in air equal to 340 m/s and in water equal to 1360 m/s, find the time taken to travel a distance 1700 m by sound in (i) air (ii) water.
How are bats able to avoid obstacles in their way?
Sound cannot travel in ______.
______ is the number of vibrations of a particle in the medium, in one second
