Question

Velocity of light in air is 3*10^ 3m/s . While its velocity in a medium is 1.5*10^3m/s then Refractive index of this medium is?
a)3
b)5
c)0.5
d)2


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Answer 1

Answer:

(D) 2 it is the right answer

Explanation:

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Answer 2

Answer:

Refractive index = $\frac{Velocity of light in air}{Velocity of light in the medium}$ = $\frac{3 X 10^{3} }{1.5 X 10^{3} }$ = 2(d)