Physics, asked by sharmanimish53, 8 months ago

you are given lens with power -20D and +10D. Find the combination of total focal length when the 2 lens are kept in contact. also tell the nature of the lens.

Answers

Answered by prathyumavm

0

Explanation:

when lens are in contact

$p = p1 + p2$

power of combination is 10d

the nature of first lens is concave and second one is convex lens

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