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Lightning and thunder take place in the ...

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 latter. Can you explain why?

Text Solution

Verified by Experts

The speed of light is more than that of sound. Due to more speed, the light reaches us before
the sound does So, lightening is seen earlier, and thunder is heard later.
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Knowledge Check

  • When body slides down from rest along smooth inclined plane making angle of 45^(@) with the horizontal, it takes time T When the same body slides down from rest along a rough inclined plane making the same angle and through the same distance it is seen to take time pT , where p is some number greater that 1. Calculate late the coefficient of friction beween the body and the rough plane. .

    A
    `(1-(1)/(P^(2)))`
    B
    `(1+(1)/(P^(2)))`
    C
    `(1)/(P^(2))`
    D
    `-(1)/(P^(2))`

  • Take the speed of sound to be 340 m/s. A thunder clap is heard about 3 s after the lightning is seen. The source of both light and sound is

    A
    moving overhead faster than the speed of sound.
    B
    emitting a much higher frequency than is heard.
    C
    emitting a much lower frequency than is heard
    D
    about 1000 m away

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