2. Solved Papers
  3. AMU Medical

AMU Medical AMU Solved Paper-2014

  • question_answer
    Calculate the focal length of reading glasses of a person, if his distance of distinct vision is 75 cm.

    A)  25.6 cm               

    B)  37.5 cm

    C)  75.2 cm               

    D)  100.4 cm

    Correct Answer: B

    Solution :

                    The given,                                 \[u=-75\,cm\]                                 \[v=75\,cm\]                                 \[f=?\]                                 \[\frac{1}{f}=\frac{1}{v}-\frac{1}{u}\]                                 \[\frac{1}{f}=\frac{1}{75}+\frac{1}{75}\]                                 \[\frac{1}{f}=\frac{1+1}{75}\]                                 \[f=\frac{75}{2}=37.5\,cm\]


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