How does the power of a lens change if its focal length is doubled?

Question

KnowledgeBoat · Accepted Answer

As we know that, Where, P = power of lens and f = focal length of lens. Hence, power of a lens is inversely proportional to its focal length. So, if the focal length is doubled, the power gets halved.

Physics

How does the power of a lens change if its focal length is doubled?

Refraction Lens

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