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A20cm convex lens is placed in contact w...

A`20cm` convex lens is placed in contact with a diverting lens of unknown focal length ,The lens combination acts as a converging lens and has a length of`30cm`.What is the focal length of the diverging lens.

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To find the focal length of the diverging lens in the given combination with a convex lens, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Known Values:** - Focal length of the convex lens (F1) = 20 cm - Focal length of the combination (F) = 30 cm (the combination acts as a converging lens) ...
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