Question

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Light enters from air to a medium X. Its speed
in medium X becomes 1.5x10^8m/s - . Find the
refractive index of medium X​

Answer 1

Answer:

2

Explanation:

Speed of light in air ( v₁ ) = 3 x 10^8

Speed of light in medium X ( v₂ ) = 1.5 x 10^8

Now ,

Refractive index ( n ) = v₁ / v₂     ( Formula )

=  3 x 10^8 /  1.5 x 10^8

= 3 / 1.5             ( 10^8 gets cancelled )

= 2

The refractive index of medium X is 2.

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