Question

an object is placed at a distance of 15 cm from a concave lens of focal length 30 cm list four characteristics of the image formed by the lens​

Answer 1

Explanation:

A convex lens is thicker at the centre than at the edges. ... When parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus. The distance between the principal focus and the centre of the lens is called the focal length.

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