On reducing the focal length of a lens, its power:

increases

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decreases

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does not change

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first increases and then decreases

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Solution

The correct option is A
increases

Power of a lens $P = \frac{1}{f}$
From the above formula, the power of the lens is inversely proportional to its focal length.
So if we reduce focal length, the power of lens will increase.

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On reducing the focal length of a lens, its power:

The correct option is A increases Power of a lens P=1f From the above formula, the power of the lens is inversely proportional to its focal length. So if we reduce focal length, the power of lens will increase.

The correct option is A
increases

Power of a lens $P = \frac{1}{f}$
From the above formula, the power of the lens is inversely proportional to its focal length.
So if we reduce focal length, the power of lens will increase.