Question

at a time when it is cloudy ,there may be frequent thunder and lightning .rhe sound of thunder takes some time to reach you after you see the lighting.can you answer why it happens.measure this time interval using a digital wrist watch or a stop watch .calculate the distance of the nearest point of lighting.(speed of sound in air =346 meter per second

Answer 1

Both thunder and lightning takes place at the same time . When two clouds collide with each other lightning and Thunder occurs simultaneously. The speed of light is more than the speed of sound. The speed of sound in air is 346 metre per second whereas the speed of light in air is 299 792 kilometre per second. Hence, the speed of light is more then the speed of sound in air. And so for that in a cloudy day we can hear the sound of thunder after we see the crack of the lightening.

Answer 2

Answer:

both thunder and lightning occurs in the same time but the speed of light is more than the speed of sound.