Question

If two concave lenses made with same dimentions but with different material if object is at infinite where did the image will form

Answer 1

Answer: image will form at the the resultant focus of the combination of the two lenses

Let resultant focus is f then

1/f=1/f 1+1/f 2

f1 f2 are focuses of the two lenses.

Explanation:

I hope you understand this.

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