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A convergent doublet of separated lens c...

A convergent doublet of separated lens correct for spherical aberration, are separated by `2m` and has an equivalent focal lenth of `10cm`. Calculate the focal length of its component lenses.

A

10 cm , 12 cm

B

16 cm 18 cm

C

12 cm,14 cm

D

18 cm , 20 cm

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