Multiple Choice Questions on The power of a lens is 2 5 D then its focal length is m ........ for 10th Standard Preparation

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Multiple Choice Questions

The power of a lens is 2 5 D then its focal length is m ........

Physics Chapter - 10
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    The power of a lens is + 2.5 D, then its focal length is_____ m.

    0.4

    Correct Answer

    4.0

    Incorrect Answer

    2.5

    Incorrect Answer

    0.25

    Incorrect Answer
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