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JEE Main & Advanced Physics Ray Optics Question Bank Graphical Questions

  • question_answer
    For a concave mirror, if virtual image is formed, the graph between m and u is of the form

    A)                                      

    B)

    C)                                      

    D)                               

    Correct Answer: B

    Solution :

                       In concave mirror, if virtual images are formed, u can have values zero and f At u = 0,  \[m=\frac{f}{f-u}=\frac{f}{f}=1\] At u = f,   \[m=\frac{f}{f-u}=-\frac{f}{-f-(-f)}=\infty \]


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