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

  • question_answer
    The dispersive power of the material of lens of focal length 20 cm is 0.08. The longitudinal chromatic aberration of the lens is                                                                   [EAMCET 2005]

    A)            0.08 cm                                   

    B)            0.08/20 cm                                                                               

    C)            1.6 cm                                     

    D)            0.16 cm

    Correct Answer: C

    Solution :

                       Longitudinal chromatic aberration                      = \[\omega f=0.08\times 20\]\[=1.6cm\].


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