Question

When the object is placed 4 cm from the
objective of microscope, the final image
formed coincides with the object. The final
image is at the least distance of distinct
vision (24 cm). If the focal length of eye
piece is 8cm then the focal length of
objective is
(1) 3.1cm
(2) 2cm
(3) 3.9cm
(4) 4.2 cm​

Answer 1

$\huge{\pink{\underline{\tt{Answer :-}}}}$

Correct option is 3.25 cm