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
    Focal length of a convex lens of refractive index 1.5 is 2 cm. Focal length of lens when immersed in a liquid of refractive index of 1.25 will be                                               [CBSE PMT 1993]

    A)            10 cm                                      

    B)            2.5 cm

    C)            5 cm                                         

    D)            7.5 cm

    Correct Answer: C

    Solution :

               \[\mu =\frac{\sin i}{\sin \frac{A}{2}}\]cm


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