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JEE Main & Advanced Physics Ray Optics Sample Paper Topic Test - Reflection of Light

  • question_answer
    There is a convex mirror of radius 50 cm. The image of a point at a distance 50 cm from the pole of mirror on its axis will be formed at:

    A) infinity                                      

    B) pole

    C) focus

    D) 16.67 cm behind the mirror

    Correct Answer: D

    Solution :

    [d]
    \[u=-50\,cm,\text{ }f=25\,cm\]
    \[\frac{1}{25}=-\frac{1}{50}+\frac{1}{v},\]
    \[\frac{1}{v}=\frac{1}{25}+\frac{1}{50}=\frac{2+1}{50}=\frac{3}{50}\]
    \[c=\frac{50}{3}=16.6\,cm\]


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