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A ray of light is incident on a prism AB...

A ray of light is incident on a prism `ABC` of `mu = sqrt(3)` as shown in Fig. Find the angle of incidence for which the deviation of light by the prism `ABC` is minimum.
By what angle should the second prism be rotated so that final ray suffers net minimum deviation ?

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The correct Answer is:
(a) `60^(@)`; (b) `60^(@)`
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