What happens to the power of lens whent it is cut into two equal halves?
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A lens is cut into two equal halves. (i) along the principal axis. (ii) Perpendicular to principal axis. ... (ii) If the lens is cut perpendicular to the principal axis than the focal length will change it will be twice the focal length of the original lens because the radius of curvature will increase and R = 2F.
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