How does the power change when a lens is put in water?
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A lens is either concave, convex or plano concave/ plano convex. When dipped in water the curved surface loses inherent curvature, changing its `power'. Since density of glass and water are different, the lens does not lose its power completely.
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Answer:
lens is dipped in water its focal length increases.
- Focal length is inversely proportional to magnification power (angular magnification), hence power decrease with the increasing wavelength.
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