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If the refracting angle of a prism is `60^@` and the minimum deviation is `30^@`, then the angle of incidence is

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If the refracting angle of a prism is `60^@` and the minimum deviation is `30^@`, then the angle of incidence is
A. `30^@`
B. `60^@`
C. `45^@`
D. `90^@`
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1 Answer

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Correct Answer - C
`i=(A+delta_m)/(2)=(60^@+30^@)/(2)=45^@`
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