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Question
The refractive index of air with respect to glass is defined: as gµa = sin i/sin r
Write down a similar expression for aµg in terms of angle i and r.
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Solution
Given: gμa = `Sin "i"/Sin "r"`
Applying the principle of reversibility:
gμa = `Sin "r"/Sin "i"`
[for the same value of ∠i and ∠r for a given pair of media]
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