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Is it true that flash and thunder are produced simultaneously, but thunder is heard a few seconds after the flash is seen?

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True

False

answer is A.

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Detailed Solution

The above statement is true.
The speed of light in air is much higher than the speed of sound in air. The speed of light is

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

, whereas the speed of sound is

340 m / s

. Therefore, the flash is seen first, and then we hear the sound.

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