Question

What is the refractive index of diamond?

• A. 1.42
• B. 1.32
• C. 2.24
• D. 2.42

Hint:

Diamond’s high refractive index makes it sparkle brilliantly by causing total internal reflection.

Answer 1

The Correct Option is D

Step 1: Refractive index meaning.
Refractive index is the ratio of speed of light in vacuum to the speed of light in medium. Diamond has one of the highest refractive indices among natural substances.
Step 2: Known value.
The refractive index of diamond is 2.42.
Step 3: Conclusion.
Hence, correct answer is 2.42.