Physics, asked by nandiniraghuwanshi20, 4 months ago

(4) 60 cm
21 Two plano-convex lenses of equal focal lengths are
arranged as shown
1- 360
DOD DD
1-
a
The ratio of the combined focal lengths is
(1) 1:2:1
(3) 1:1:1
(2) 1:2:3
(4) 2:1:2

Answers

Answered by ayush1601

1

Explanation:

the ratio of combined focal length is may be option 3

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