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.
