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Asked by sarveshvibrantacademy | 30 Apr, 2019, 12:38: PM
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δ = i + e - A ............(1)
 
where δ is angle of deviation, i is angle of prism, e is angle of emergence and A is angle of prism.
 
hence A = i + e - δ = 15+60-30 = 45°
Answered by Thiyagarajan K | 30 Apr, 2019, 13:21: PM

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