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

  • question_answer
    The image distance of an object placed 10 cm in front of a thin lens of focal length + 5 cm is [SCRA 1994]

    A)            6.5 cm                                     

    B)            8.0 cm

    C)            9.5 cm                                     

    D)            10.0 cm

    Correct Answer: D

    Solution :

               \[\frac{1}{f}=\frac{1}{v}-\frac{1}{u}\]\[\Rightarrow \]\[\frac{1}{+5}=\frac{1}{v}-\frac{1}{(-10)}\Rightarrow v=10\]\[cm\]


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