Thunderstorm is formed at a height of 24 km from the surface of earth. The time interval between the sound and the light being received is (speed of sound =300 m/s speed of light =3 x 10 ^ 8 m/s)

Time taken by light is given by,
t=Distance between earth and thunderstormSpeed of light=240003×108=8×10-5 sec=0.00008 secTime taken by sound, t'=Distance between earth and thunderstormSpeed of sound=24000300=80 secTime interval between t and t'=79.9 sec

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