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    If n1 = 1.57 and n2 = 1.11, what is the critical angle for light incident from side 1?

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    If n1 = 1.48 and n2 = 1.36, what is the critical angle for light incident from side 1?

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    If n1 = 1.71 and n2 = 1.14, what is the critical angle for light incident from side 1?

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    If n1 = 2.03 and n2 = 1.98, what is the critical angle for light incident from side 1?

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    If n1 = 1.8 and n2 = 1.48, what is the critical angle for light incident from side 1?

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    If n1 = 1.45 and n2 = 1.04, what is the critical angle for light incident from side 1?

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