What is power of lens? If power of a lens is +2.25D, what does it represent?
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Explanation:
Power is given by the formula= P 1/f ( in meters) , where f is the focal length. A power of+2 diopretry means the focal length of lens is 0.5 m.
Moreover, based on the convention of the lens ' +'sign indicates that the lens is the convex lens.
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