Physics, asked by onoja7156, 1 year ago

A compound lens is made of two lenses in contact having powers +12.5 d and _2.5

d. find the focal length

Answers

Answered by Mla1
1
1/focal length equal to p1 plus p2
1/ focal length equal to 12.5 -2.5
1/ focal length equal to 10d
On reciprocating,
focal length equal to 1/10 .
Focal length is 0.1m
Focal length is 10cm
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