The power of a lens is a measure of its degree of

convergance

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divergence

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convergence or divergence

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rotation

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Solution

The correct option is B convergence or divergence
The power of lens is the capacity of a lens to converge the beam of light falling on it(convex lens) or to diverge the beam of light falling on it (concave lens).

Numerically it is defined as-

$P o w e r = \frac{1}{f (i n m)}$

SI unit of power of a lens is $d i o p t e r (D) .$

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