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Mam, the refractive index of diamond is much greater than that of glass. How does a diamond cutter make use of this fact? Actually mam this question is in my sample paper and it does not contain any answer so i also not get understand of it.

Asked by Virendra Jain 22nd February 2013, 9:39 PM
Answered by Expert
Answer:
 The refractive index of diamond(2.42) is much greater than that of glass(1.5). The large refractive index results in small critical angle for diamond i.e. about 240. diamond cutter cuts the faces in such a way that light moving from diamond to air always strike the surface at angle greater than critical angle and gets Total Internal Reflection. Thus the diamond shines.
Answered by Expert 23rd February 2013, 1:43 AM
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