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Lightning and thunder take place in the sky at the same time and at the same distance from us.Lightning is seen earlier and thunder is heard later.Explain why this happens?
In thunder,the light is seen much earlier than the sound of thunder is heard although they are produced simultaneously.The reason is that light takes almost negligible time in comparison to sound in reaching us from the thunder because the speed of light is much more
 ( = 3 x 108 m/s) than the speed of sound ( = 330 m/s).


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