Question

1. For all transparent material substances, the index of refraction
(A) is less than 1
(B) is greater than1
(C) is equal tol
(D) Could be any of the given answers; it all depends on optical density​

Answer 1

Answer:

Since the refractive index of a vacuum is defined as 1.0 and a vacuum is devoid of any material, the refractive indices of all transparent materials are therefore greater than 1.0

Answer 2

Concept: Refractive index measures the path of light what quantity it refract. It is the ratio of speed of light in air to the speed of light in medium.

Find: Choose an appropriate option.

Solution: Refractive index of transparent material is greater than 1 because the speed of light in air is greater than the speed of light in transparent medium.

Final answer: B) is greater than 1.

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