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J & K CET Engineering J and K - CET Engineering Solved Paper-2013

  • question_answer
    A magnifying glass of focal length \[5\text{ }cm\]is used to view an object by a person whose smallest distance of distinct vision is\[25\text{ }cm\]. If he holds the glass close to eye, the magnification is

    A)  \[5\]      

    B)  \[6\]

    C)  \[2.5\]   

    D)  \[3\]

    Correct Answer: B

    Solution :

    \[m=1+\frac{D}{f}\] Given,  \[f=5\,cm,\,D=25\,cm\] \[\therefore \] \[m=1+\frac{25}{5}=6\]


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