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CMC Medical CMC-Medical VELLORE Solved Paper-2012

  • question_answer
    A double convex lens made up of a material of refractive index \[{{\mu }_{1}}\] is immersed inside two liquids of refractive indices \[{{\mu }_{2}}\] and \[{{\mu }_{3}}\] as shown in figure. If \[{{\mu }_{2}}>{{\mu }_{1}}<{{\mu }_{3}}\] and a wide parallel beam of light incident on the lens from the left, then the lens will give rise to

    A)  a convergent beam and a divergent beam

    B)  two different divergent beams

    C)  two different convergent beams

    D)  a single convergent beam

    Correct Answer: A

    Solution :

                    As \[{{\mu }_{2}}>{{\mu }_{1}},\]the upper half of the lens become diverging and as \[{{\mu }_{1}}>{{\mu }_{3}},\]the lower half of the lens become converging.


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