Physics, asked by harshithatha84, 8 months ago

how do you find out focal length of 2lens​

Answers

Answered by tharani1523
4

Explanation:

It depends on the distance between them. If their distance is d and the focal length of the lenses are f1 & f2 then the focal length f of combined system is determined by

1/f=1/f1+1/f2-d/f1f2

The thickness of each lens is not necessary here

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