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NEET Sample Paper NEET Sample Test Paper-28

  • question_answer
    Focal length of a glass lens in air is 2 cm. Its focal length when immersed in water would be :-

    A)  4 cm              

    B)  6 cm

    C)  8 cm            

    D)  12 cm

    Correct Answer: C

    Solution :

    As is known, \[{{f}_{w}}=4{{f}_{a}}=4\times 2=8cm.\] 


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