Question

Velocity of light in air is 3x10⁸ m/s.Its velocity in a medium is 1.5x10⁸ m/s, then refractive index of the medium is​

Answer 1

Answer:

Correct option is C)

Given : Velocity of medium =1.5×10

8

m/sec.

Velocity of light, c=3×10

8

m/sec.

To find : n=?

n=

v

c

n=

1.5×10

8

3×10

8

=2

n=2

Hence, the refractive index of the medium with respect to air is 2.

Explanation:

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