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The value of refractive index is different for each type of plastic.

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Dahlia Miller

Lvl 13
2y ago
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Wiki User

15y ago

the refractive index(n) and the critical angle( c) relate to each other with the formula as n = 1/sin c. solving using this, the n = 1/sin 40 = 1.556.

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Wiki User

14y ago

the answer is around 1.5.

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Wiki User

12y ago

not a clue

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Q: What is the refractive index of a plastic semi circle?
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