Question

If the angle of incidence and angle of deviation are known then how to find the angle of emergence ??

please tell me​

with example please​

Answer 1

angle of incidence+angle of emergence =angle of prism (60degree normally) +angle of deviation

I hope this helps you

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Answer 2

The sum of angle of Incidence and angle of Emergence is equal to the sum of angle of Prism and  angle of Deviation.