An equiconvex lens of glass of focal length 0.1 metre is cut along a plane perpendicular to principle axis into two equal parts. The ratio of focal length of new lenses formed is
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a
1 : 1
b
1 : 2
c
2 : 1
d
2 : 12
answer is A.
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Detailed Solution
Ratio of focal length of new plano convex lenses is 1 : 1