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

  • question_answer
    A biconvex lens with equal radii curvature has refractive index 1.6 and focal length 10 cm. Its radius of curvature will be                                                                                            [MP PET 2003]

    A)            20 cm                                      

    B)            16 cm

    C)            10 cm                                      

    D)            12 cm

    Correct Answer: D

    Solution :

               \[f=\frac{R}{2(\mu -1)}\Rightarrow 10=\frac{R}{2(1.6-1)}\Rightarrow R=12\]\[cm\]


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