Let us assume a system that consists of two lenses with focal length f

1.	Let us assume a system that consists of two lenses with focal length f1and f2respectively. How do you find the focal length of the system experimentally, wheni) two lenses are touching each otherii) they are separated by a distance ‘d’ with common principal axis.
Answer» ANSWER: There are formulae for these: 1.(1/f)=(1/f1)+(1/F2) 2.(1/f)=(1/f1)+(1/f2)-(d/(f1f2)) hope HELPS you*

Let us assume a system that consists of two lenses with focal length f1and f2respectively. How do you find the focal length of the system experimentally, wheni) two lenses are touching each otherii) they are separated by a distance ‘d’ with common principal axis.

Answer»

ANSWER:

There are formulae for these:

1.(1/f)=(1/f1)+(1/F2)

2.(1/f)=(1/f1)+(1/f2)-(d/(f1*f2))

hope HELPS you

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Let us assume a system that consists of two lenses with focal length f1and f2respectively. How do you find the focal length of the system experimentally, wheni) two lenses are touching each otherii) they are separated by a distance ‘d’ with common principal axis.

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