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Brewster's Angle

The velocity ...

Question

The velocity of all colours is same in _____.

A

Water

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B

Vaccum

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C

Air

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D

Glass

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Solution

The correct option is B Vaccum
Vaccum is space which doesn't resist the speed of light hence all colour or wavelength of light ray travel at same speed i.e speed of light $3 \times 10^{8}$ m/s

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