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The speed of light in air is 3 xx 10^(8)...

The speed of light in air is `3 xx 10^(8) m//s`, when this light travels in a medium of refractive index 1.5, its speed shall be

A

` 3 xx 10^(8) m//s`

B

` 2 xx 10^(8) m//s`

C

` 0.5 xx 10^(8) m//s`

D

` 4.5 xx 10^(8) m//s`

Text Solution

Verified by Experts

The correct Answer is:
B
Given that, Speed of light in air `C = 3 xx 10^(8) m//s`
Refractive index of medium= 15
Speed of light in medium= `(3 xx 10^(8))/(1.5)= 2 xx 10^(8) m//s`
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