Question

a light ray enters from medium a to medium b the refractive index of medium b with respect to medium a

Answer 1

Refractive index of medium B relative to A will be greater than unity.

Explanation:

• As the light goes from medium A to B, the ray of light deviates towards normal.

• So it has greater restrictive index and lesser velocity of light with respect to medium A.

• Therefore, medium B must be denser compared to medium A.

• The refractive index of medium B relative to A will be greater than unity.

Hence refractive index of medium B relative to A will be greater than unity.

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