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Railways Sample Paper RRB (Group D) Sample Test Paper-3

  • question_answer
    Which one of the following is used to remove Astigmatism for a human eye?

    A)  Concave lens    

    B)  Convex lens

    C)  Cylindrical lens

    D)         Prismatic lens

    Correct Answer: C

    Solution :

    [c] In Astigmatism, eye cannot see objects in two. Orthogonal directions clearly simultaneously. This abnormality is removed by using cylindrical lens.


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