2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. Ray Optics

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

  • question_answer
    A convex lens is used to form real image of an object on a screen. It is observed that even when the positions of the object and that screen are fixed there are two positions of the lens to form real images.  If the heights of the images are 4 cm and 9 cm respectively, the height of the object is [AMU (Med.) 1999]

    A)            2.25 cm                                   

    B)            6.00 cm

    C)            6.50 cm                                   

    D)            36.00 cm

    Correct Answer: B

    Solution :

               \[O=\sqrt{{{I}_{1}}{{I}_{2}}}\Rightarrow O=\sqrt{4\times 9}=6\,\,cm\]


You need to login to perform this action.
You will be redirected in 3 sec spinner