Question

Why do we see flash of lightning before hearing the sound of thunder?

Answer 1

The speed of light is 3×10^8 and the speed of sound is 343m/s in air.Since the speed of light is much greater than the speed of sound, therefore we see the flash of light before hearing the thunder

Answer 2

Question:

We see flash earlier than thunder, Explain?

Answer:

We see flash earlier than thunder because the speed of light is more than the speed of sound . Sound is slower , it takes some more time than light to reach us . This is why we see flash earlier than thunder sound .

• Speed of sound - 330m / s at O degrees celsius.

• Speed of light- 3 * 10 ^ 5 km / s.