Advertisements
Advertisements
प्रश्न
During a thunderstorm, the sound of a thunder is heard after the lightning is seen. Why?
Advertisements
उत्तर
The velocity of light is 3 × 108 m/s-1 whereas velocity of sound is 332 m/s-1. First we see the flash of light and then we hear the thunder.
As a result, lightning appears first and thunder follows. The thunderstorm may be far from us if there is simply lightning and no thunder.
APPEARS IN
संबंधित प्रश्न
Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen, why?
Two children are at opposite ends of an aluminium rod. One strikes the end of the rod with a stone. Find the ratio of times taken by the sound wave in air and in aluminium to reach the second child.
Describe an experiment to show that sound can travel in water.
Describe an experiment to show that sound can travel in a solid.
Guess which sound has a higher pitch:
What is meant by supersonic speed?
A sound signal of 128 vibrations per second has a wavelength of 2.7 m. Calculate the speed with which the wave travels.
The speed of highly penetrating ultrasonic waves is :
The velocity of sound in air at a particular temperature is 330 ms–1. What will be its value when temperature is doubled and the pressure is halved?
The speed of sound in a gaseous medium depends on ______.
