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JIPMER Jipmer Medical Solved Paper-1995

  • question_answer
    A glass prism with refractive index 2 has refracting angle of \[30{}^\circ \]. One of the refracting surface of the prism is polished. A beam of monochromatic light will retrace its paths. If its  angle of incidence over the refracting surface of, the prism is:            

    A)              \[60{}^\circ \]                                      

    B)              \[45{}^\circ \]      

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

    D)                                                     \[0{}^\circ \]

    Correct Answer: D

    Solution :

    Here refractive index \[(\mu )=2\] Angle of refraction (r) = 30° As it is clear that for retracing its path the angle of emergence should be zero.


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