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Is it true that a few seconds after the lightning flare, thunder can be heard?

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a

True

b

False

answer is A.

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Detailed Solution

The above statement is True.
Thunder and lightning both occur at the same moment when lightning strikes. Since light travels more quickly than sound, a flash can be seen practically immediately after a lightning strike. However, after a few seconds of lightning, thunder can be heard. Since the speed of light

(c = 3 \times 1 0^{8} m / s

) is greater than the speed of sound

(330 m / s)

light moves more quickly than sound.

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