Seven seconds after a brilliant flash of lightning, thunder shakes the house. how far was the lightning strike from the house? seven seconds after a brilliant flash of lightning, thunder shakes the house. how far was the lightning strike from the house? much farther away than two kilometers much closer than one kilometer about two kilometers away about one kilometer away it is impossible to predict.

About two kilometers away

Explanation:

Given:

The time gap between the light and sound to travel to the house,

Since the clouds are formed in the troposphere region of the atmosphere which extends from 8 kilometers to 12 kilometers above the earth-surface and the velocity of light is 300000 kilometers per second so it is visible almost instantly, hence we neglect the time taken by the light to travel to the house from the clouds.

∴Distance between the lightning-strike and the house:

we have the speed of sound as:

So,

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