Optics Question 961

Question: A cut diamond sparkles because of its

[NCERT 1974; RPET 1996; AFMC 2005]

Options:

A) Hardness

B) High refractive index

C) Emission of light by the diamond

D) Absorption of light by the diamond

Show Answer

Answer:

Correct Answer: B

Solution:

Due to high refractive index its critical angle is very small so that most of the light incident on the diamond is total internally reflected repeatedly and diamond sparkles.



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