Question

thunder and lightning both occur simultaneously but thunder is heard a few seconds after lightning appears .give a reason

Answer 1

Answer:

Speed of sound in air (330 ms

−1

) is very less than speed of light in air (3×10

8

m/s).

Hence although lightening and thunder are produced simultaneously, light (flash) reaches the earth surface a little earlier than sound (i.e thunder) .

So thunder is heard a few seconds after the lightening is seen.

Answer 2

Explanation:

Because light travels faster than sound