Brilliance of diamond is due to

The correct answer is (d).

The brilliance of diamond is due to total internal reflection of light. When light enters a diamond from air, it is refracted (bent) and then reflected off the back of the diamond. The light is then refracted again as it exits the diamond. This process of refraction and reflection causes the light to be scattered in all directions, which gives diamonds their brilliant appearance.

(a) Interference of light is the phenomenon that occurs when two or more waves of light meet and interfere with each other. This can

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