if a symmetrical convex lens of focal length f is cut into two parts along the principal Axis as shown in the figure the focal length of each part is
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If a symmetrical convex lens of focal length f is cut into two parts along the principal axis, then focal length of each part remains unchanged at f. If these two parts are joined with curved ends on one focal length of the combination is 2f. But joining two parts in opposite, net focal length becomes ∞.
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if a symmetrical convex lens of focal length f is cut into two parts along the principal Axis as shown in the figure the focal length of each part is'F'
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