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

  • question_answer
    A convex lens forms a real image of an object for its two different positions on a screen. If height of the image in both the cases be 8 cm and 2 cm, then height of the object is [KCET 2000, 01]

    A)            16 cm                                      

    B)            8 cm

    C)            4 cm                                         

    D)            2 cm

    Correct Answer: C

    Solution :

               \[O=\sqrt{{{I}_{1}}{{I}_{2}}}=\sqrt{8\times 2}=4cm\]


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