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

  • question_answer
    An object of height 1.5 cm is placed on the axis of a convex lens of focal length 25 cm. A real image is formed at a distance of 75 cm from the lens. The size of the image will be                                                       [MP PET 1999]

    A)            4.5 cm                                     

    B)            3.0 cm

    C)            0.75 cm                                   

    D)            0.5 cm

    Correct Answer: B

    Solution :

               \[\frac{I}{O}=\frac{f-v}{f}\]\[\Rightarrow \frac{I}{+1.5}=\frac{(25-75)}{25}=-\,2\]\[\Rightarrow I=-\,3\,cm\]


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