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An object is placed at a distance of 30 ...

An object is placed at a distance of 30 cm from a convex lens of focal length 20 cm.

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To solve the problem of finding the distance of the image formed by a convex lens when an object is placed at a distance of 30 cm and the focal length of the lens is 20 cm, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Given Values:** - Focal length of the convex lens (f) = +20 cm (positive because it is a convex lens). - Object distance (u) = -30 cm (negative according to the sign convention, as the object is placed on the same side as the incoming light). ...
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