Three convex lenses L1, L2,L3 are placed in a row. The focal length of each lens is 20cm. An object is kept at 40cm in front of L1. The final image is formed at the focus I of L3. Find the separation between L1, L2, L3.

Asked by PRANAV | 1st Oct, 2013, 07:01: AM

Expert Answer:

Answered by Faiza Lambe | 1st Oct, 2013, 09:46: AM

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