The refracting angle of a prism is

PHYSICS · Single correct · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments

Problem

The refracting angle of a prism is AA, and the refractive index of its material is cot⁡(A2)\cot\left(\frac{A}{2}\right). The angle of minimum deviation is: (1) 180∘−3A180^\circ-3A (2) 180∘+2A180^\circ+2A (3) 90∘−A90^\circ-A (4) 180∘−2A180^\circ-2A

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