Question

nature of power of concave and convex lens​

Answer 1

Answer:

Explanation:

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Answer 2

Answer:

The concave lens is a diverging lens, because it causes the light rays to bend away (diverge) from its axis. ... The distance from the center of the lens to the focal point is again called the focal length f of the lens. Note that the focal length and power of a diverging lens are defined to be negative.