NEET Physics Ray Optics NEET PYQ-Ray Optics

  • question_answer
    The refracting angle of a prism is A, and refractive index of the material of the prism is \[\cot \,(A/2)\]. The angle of minimum deviation is [NEET  2015]

    A)  \[{{180}^{o}}-3A\]    

    B)       \[{{180}^{o}}-2A\]

    C)  \[{{90}^{o}}-A\]        

    D)       \[{{180}^{o}}+2A\]

    Correct Answer: B

    Solution :

    As, we know that
           
           
               
           
           
                           


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