Angle of maximum deviation is : (A) \( 45^{\circ} \) (B) \( \sin ^{-1}\left(\sqrt{2} \sin 15^{\c...

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Angle of maximum deviation is :
(A) \( 45^{\circ} \)
(B) \( \sin ^{-1}\left(\sqrt{2} \sin 15^{\circ}\right) \)
(C) \( 30^{\circ}+\sin ^{-1}\left(\sqrt{2} \sin 15^{\circ}\right) \)
(D) None
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