In the following diagram, an object O is placed 15cm in front of a convex lens L1 of focal length 20cm and the final image is formed at I at a distance of 80cm from the second lens L2. Find the focal length of the lens L2.

Question

In the following diagram, an object O is placed 15cm in front of a
convex lens L1 of focal length 20cm and the final image is formed
at I at a distance of 80cm from the second lens L2 Find the focal
length of the lens L2

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Pintu B. · Accepted Answer

Dear Student ,
Here is a link which will help you to solve this question with
proper explanation

https://www meritnation
com/ask-answer/question/an-object-o-is-placed-15-cm-from-a-convex-lens-l1-of-focal/ray-optics/10615183
Regards

In the following diagram, an object O is placed 15cm in front of a convex lens L1 of focal length 20cm and the final image is formed at I at a distance of 80cm from the second lens L2. Find the focal length of the lens L2. ​

In the following diagram, an object O is placed 15cm in front of a convex lens L1 of focal length 20cm and the final image is formed at I at a distance of 80cm from the second lens L2. Find the focal length of the lens L2.