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A compound microscope is an instrument w...

A compound microscope is an instrument which consists of two lenses `L_1 and L_2`. The lens `L_1` called objective, forms a real, inverted and magnified image of the given object. This serves as the object for the second lens `L_2`, the eye piece. The eye piece functions like a simple microscope or magnifier. It produces the final image, which is inverted with respect to the original object, enlarged and virtual.
If power of the eyepiece `(L_2)` is 5 diopters and it forms an image at a distance of 80 cm from its optical centre, at what distance should the object be ?

A

12 cm

B

16 cm

C

18 cm

D

20 cm

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