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JEE Main & Advanced Physics Ray Optics Question Bank Refraction at Curved Surface

  • question_answer
    The slit of a collimator is illuminated by a source as shown in the adjoining figures. The distance between the slit S and the collimating lens L is equal to the focal length of the lens. The correct direction of the emergent beam will be as shown in figure                                                          [CPMT 1986]

    A)            1    

    B)            3

    C)            2    

    D)            None of the figures

    Correct Answer: C

    Solution :

               In case of convex lens if rays are coming from the focus, then the emergent rays after refraction are parallel to principal axis.


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