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Why does a diamond shine ?...

Why does a diamond shine ?

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The brilliance of diamond is due to total internal reflection of light. `mu` for diamond is `2.42`, so that critical angle for diamond air interface is `C = 24.4^@ (from sin c = 1//mu)`. The diamond is cut suitably so that light entering the diamond from any face suffers multiple total internal reflections at the various faces, and remains within the diamond. Hence the diamond sparkles.
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  • Diamond is-

    A
    an element
    B
    a compound
    C
    a mixture
    D
    a liquid

  • Diamond is:

    A
    a covalent solid
    B
    non-conductor
    C
    a lubricant
    D
    `sp^(3)` hybridised

  • Diamond is a

    A
    metallic cyrstal
    B
    covalent cyrstal
    C
    ionic crystal
    D
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