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The speeds of light is 299, 792, 458 ms^...

The speeds of light is 299, 792, 458 `ms^-1`

A

1.with respect to the earth

B

2.with respect to the sun

C

3.with respect to train as moving on the earth

D

4.with respect to a spaceship going in outer space

Text Solution

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The correct Answer is:
A, B, C
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Knowledge Check

  • The speed of light is 3 xx 10^(17) n ms^(-1) . Which is the closest to the wavelength in nanometer of a quantum of light with frequency of 6 xx 10^(15) s^(-1) ?

    A
    10
    B
    25
    C
    50
    D
    75

  • The speed of light in vaccum is _______ ms^(-1) .

    A
    `3 xx 10^(8)`
    B
    `388 xx 10^(8)`
    C
    `0.38 xx 10^(8)`
    D
    `3.6 xx 10^(8)`

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    The speed of light in air is 3 xx 10^(8) ms^(-1) and in glass it is 2 xx 10^(8) ms^(-1) . What is the refractive index of glass ?

    The refractive index of glass is 1.50, and the speed of light in air is 3 xx10^(8) ms^(-1) Calculate the speed of light in glass

    The metre is defined as the distance travelled by ligh in (1)/(299,792,458) second. Why didn't people choose some easier number such as (1)/(300.000.000) second?

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    The speed of light in glass is 2.0 xx 10^(8) ms ^(-1) . Does it violate the second postulate of special relativity ?

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