Science, asked by palanisamyak1967, 8 hours ago

power of lens is -2D then it's focal length is​

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Answered by jyoshana4
1

The power of a lens is equal to the reciprocal of its focal length in meters. The power of a lens is inversely proportional to its focal length. Therefore a lens of short focal length has more power, whereas a lens of long focal length has less power

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