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JEE Main & Advanced Physics Ray Optics Question Bank Graphical Questions

  • question_answer
               Which of the following graphs is the magnification of a real image against the distance from the focus of a concave mirror

    A)                                   

    B)

    C)                                   

    D)

    Correct Answer: D

    Solution :

                       For concave mirror \[m=\frac{f}{f-u}\]  For real image m \[=-\frac{f}{(u-f)}\]\[=-\frac{f}{x}\] \[=-\frac{f}{\text{(Distance of object from focus})}\]Þ \[m\propto \frac{1}{x}\].


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