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JEE Main & Advanced JEE Main Paper (Held On 22 April 2013)

  • question_answer
    The polymer used for optical lenses is:     JEE Main  Online Paper (Held On 22 April 2013)

    A)  polypropylene    

    B)  polyvinyl chloride 

    C)  polythene

    D)  polymethyl methacrylate

    Correct Answer: D

    Solution :

     Polymethyl methacryiate is hard, fairly rigid. It is used for optical lenses.


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