Question

what is meant by power of the lens
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Answer 1

Answer:

If a lens has a shorter focal length it is said to be more powerful. The power of a lens is defined as the reciprocal of the focal length. ... Converging (convex ) lenses have positive focal lengths, so they also have positive power values.

Explanation:

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Answer 2

Answer:

Power of lens is defined as ability of a lens to converge / diverge a beam of light rays falling on lens . Power of lens is reciprocal of focal length where p is power of lens and f is focal length. S.l. unit of power is dioptre (D).