Punjab Medical Punjab - MET Solved Paper-2003

  • question_answer
    A this glass prism \[(\mu =1.5)\] in the position of minimum deviation deviates the  monochromatic light ray by\[{{10}^{o}}\], the refracting angle of prism is:

    A) \[{{20}^{o}}\]                                    

    B) \[{{10}^{o}}\]

    C) \[{{30}^{o}}\]                                    

    D) \[{{45}^{o}}\]

    Correct Answer: A

    Solution :

    Given:\[{{\delta }_{m}}={{10}^{o}},\,\,\mu =1.5\] For a thin prism of minimum deviation\[{{\delta }_{m}}=(\mu -1)A\]                 \[{{10}^{o}}=(1.5-1)A\]or\[A=\frac{10}{0.5}={{20}^{o}}\]


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