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ConceptRefraction at Spherical Surfaces and by Lenses - Power of a Lens

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#### Question

Find the power of a concave lens of focal length 2 m.

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#### Similar questions

Define 1 dioptre of power of a lens.

Calculate the focal length of a corrective lens having power +2D.

What does sign of power (+ve or –ve) indicate?

What is meant by power of a lens?

A doctor has prescribed a corrective lens of power +1.5 D. Find the focal length of the lens. Is the prescribed lens diverging or converging?