A) high density
B) total internal reflection
C) crystal lattice
D) none of the above
Correct Answer: B
Solution :
The faces of diamond are cut in such a way that whenever light falls on any of the face, the angle of incidence is greater than the critical angle, that is\[{{24}^{o}}\]. So, when light falls on diamond, it suffers repeated internal reflections. When this reflected light emerges out, one gets the diamond sparkle.
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