Explain why, the flash of lightning reached us first and the sound of thunder is heard a little later.

Explain why, the flash of a gun shot reaches us before the sound of the gun shot.

A cricket ball is seen to hit the bat first and the sound of hitting is heared a little later. Why?

Statement-1 : The flash of lightening is seen before the sound of thunder is heard Statement-2 : The sound of thunder is produced after the flash of lightening.

Assertion: The flash of lightening is sees before the sound of thunder is heard. Reason: Speed of sound is greater than speed of light.

Ratan saw a flash of lightning and after sometime heard the sound of thunder. If the time gap between seeing and hearing is 3 s, then write the following steps in sequence to find the height from the ground where the lightning is produced. (a) Consider the velocity of sound (v) as 330 ms^(-1) . (b) Note the time gap (t) between seeing and hearing. (c) From the formula, speed = ("distance")/("time taken") , height at which lightning was produced = speed of sound xx time interval. (d) Substitute the values in the equation (1) and find the value of the height of the lightning from the ground.