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A certain prism is found to produce a mi...

A certain prism is found to produce a minimum of`38^(@)`.It produces a deviation of `44^(@)`when the angle of incident is either`42^(@)`or`62^(@)` .What is the angle of incidence when it is undergoing minimum deviation?

A

`45^(@)`

B

`49^(@)`

C

`40^(@)`

D

`55^(@)`

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