Science, asked by jithinpatnaik7393, 1 year ago

The compound mirroscope consists of two convex lenses of 5 cm and 20 cm focal length, then which of them will be object lens and eye piece ?
(A) Object lens with 20 cm focal length and eye piece with 5 cm focal length.
(B) Object lens with 5 cm focal leugth and eye piece with 20 cm focal length.
(C) Both should have 20 cm focal length.
(D) Both should have 5 cm focal length.

Answers

Answered by abhi178
8
answer :- option (B) object lens with 5 cm focal length and eye piece with 20cm focal length.

we know,
\textbf{for a compound microscope focal length}\\\textbf{of an objective lens is smaller}\\\textbf{than eye piece lens.}
e.g., \bf{f_0 < f_e}

where \bf{f_0} is the focal length of objective lens .
\bf{f_e} is the focal length of eye piece lens.
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