1.

The refracting angle of a prism is A and refractive index of the material of prism is `cot(A//2)` . The angle of minimum deviation will beA. `pi+2A`B. `pi-2A`C. `(pi)/(2)+A`D. `(pi)/(2)-A`

Answer» Correct Answer - B
`mu=(sin((A+delta)/(2)))/(sin((A)/(2)))=cot"(A)/(2)`


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