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Identify the principle behind the sparkling of diamonds.

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in Physics – Class 12 by (135k points)
Identify the principle behind the sparkling of diamonds.

(a) Total internal reflection

(b) Refraction

(c) Reflection

(d) Optical activity

I had been asked this question during an online interview.

This is a very interesting question from Ray Optics in division Ray Optics and Optical Instruments of Physics – Class 12

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Right choice is (a) Total internal reflection

Explanation: The faces of a diamond are cut suitably so that light entering it suffers total internal reflections repeatedly and gets collected inside but it comes out through only a few faces. Diamond sparkles when seen in the direction of emerging light.

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