define 1 dioptre of power of a lens
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1 dioptre/ 1D is the reciprocal of the focal length of a lens in metres.
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Hi friend,
1 dioptre/ 1D is the reciprocal of the focal length of a lens in metres.
Hope this helps you a little!!!!
1 dioptre/ 1D is the reciprocal of the focal length of a lens in metres.
Hope this helps you a little!!!!
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