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If n1 = 2.01 and the critical angle is 47.84, what is n2?

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If n1 = 1.94 and the critical angle is 48.36, what is n2?

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If n1 = 1.84 and the critical angle is 55.15, what is n2?

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If n1 = 2.18 and the critical angle is 63.44, what is n2?

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If n1 = 2.18 and the critical angle is 33.71, what is n2?

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If n1 = 1.94 and the critical angle is 31.02, what is n2?

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