Questions
A given equiconvex lens is cut into four parts and the parts are rearranged as shown. If the initial focal length is f, then after rearrangement the equivalent focal length is
detailed solution
Correct option is B
Cutting a lens in transverse direction doubles their focal length i.e. 2f.using the formula of equivalent focal length 1F=1f1+1f2+1f3+1f4=42f=2f⇒F=f2Talk to our academic expert!
Similar Questions
Image of the sun is formed by a binconvex lens of focal length f. The image is a circular patch of radius r and is formed on the focal plane of the lens. Choose the correct statement from the following
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