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JEE Main & Advanced Physics Question Bank Prism Theory and Dispersion of Light

  • question_answer
    A ray of light passes through the equilateral prism such that angle of incidence is equal to the angle of emergence if the angle of incidence is 45o.  The angle of deviation will be [Pb. PMT 2002]

    A)            15o                                            

    B)            75 o

    C)            60 o

    D)            30 o

    Correct Answer: D

    Solution :

                       \[A={{60}^{o}},i=e={{45}^{o}}\] By \[i+e=A+\delta \] \[\Rightarrow \] \[45+45=60+\delta \Rightarrow \delta ={{30}^{o}}\]


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