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Question
A ray of light incident at an angle of incidence 48° on a prism of refracting angle 60° suffers minimum deviation. Calculate the angle of minimum deviation.
[Hint: δmin = 2i - A]
Solution
Given,
Angle of incidence, i = 48°
refracting angle , A = 60°
Angle of minimun deviation deviation, δmin = ?
As δmin = 2 i - A
δmin = 2 (48) - 60
δmin = 36°
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