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JEE Main & Advanced Physics Ray Optics Question Bank Spherical Mirror

  • question_answer
    An object of size \[7.5cm\] is placed in front of a convex mirror of radius of curvature \[25cm\] at a distance of \[40cm.\]The size of the image should be

    A)            \[2.3cm\]                               

    B)            \[1.78cm\]

    C)            \[1cm\]                                  

    D)            \[0.8cm\]

    Correct Answer: B

    Solution :

               By using \[\frac{I}{O}=\frac{f}{f-u}\] \[\Rightarrow \frac{I}{+(7.5)}=\frac{(25/2)}{\left( \frac{25}{2} \right)-(-40)}\Rightarrow I=1.78\ cm\]


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