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The velocity of light in air is ……………….....

The velocity of light in air is ………………..m/s.

A

`3xx10^(10)`

B

`3xx10^(8)`

C

`1.5xx10^(8)`

D

`0.3xx10^(8)`

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Knowledge Check

  • The velocity of light is maximum in

    A
    Diamond
    B
    Water
    C
    Vacuum
    D
    Glass

  • Velocity of sound in air is ……….....

    A
    faster in dry air than in moist air.
    B
    directly proportional to temperature.
    C
    directly proportional to pressure.
    D
    Slower in dry air than in moist air.

  • The wavelenght of sodium light in air is 5890Å. The velocity of light in air is 3 xx 10^(8) ms^(-1) The wavelenght of light in a glass of refractive index 1.6 would be close to

    A
    5890Å
    B
    3681Å
    C
    9424Å
    D
    15078Å

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