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Question
A prism has a refracting angle of 60°. When placed in the position of minimum deviation, it produces a deviation of 30°. The angle of incidence is ______.
Options
30°
45°
15°
60°
MCQ
Fill in the Blanks
Solution
A prism has a refracting angle of 60°. When placed in the position of minimum deviation, it produces a deviation of 30°. The angle of incidence is 45°.
Explanation:
i = `("A"+delta_"m")/2`
= `(60+30)/2`
= 45°
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