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Light travels fastest in vacuum.Why?...

Light travels fastest in vacuum.Why?

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Knowledge Check

  • Sound travels fastest in ……..

    A
    Steel
    B
    air
    C
    water
    D
    vacuum
  • Assertion : Light can travel in vacuum but sound cannot travel in vacuum. Reason : Light is an electromagnetic wave whereas sound is a mechanical wave. Which one of the following statement is correct ?

    A
    Both assertion and reason are true and reason explains assertion correctly.
    B
    Both assertion and reason are true and reason does not explain assertion correctly.
    C
    Assertion is true but reason is false
    D
    Assertion is false but reason is true.
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