(a) A bi-convex spherical lens
has a focal length of 20 cm. If
it is split along a plane AB into
two halves to form two plano-
convex lenses, then what will be
the focal length of each plano-
convex lens?
(b) What if the lens be cut along
CD?
ch focal length of each part
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I think quition is wrmg because bispherical lense means a lense acc to the questions it means convex lense how can a lense be split into mirror not lense okay
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