What do you understand by the power of a lens ? Name one factor on which the power of a lens depend.
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Power of lens is the ability of the lens to converge the rays of light falling on it. It can also be defined as P=1/f where f is the focal length. Power of a lens is the reciprocal of its focal length. ... One Dioptre is the power of a lens whose focal length is 1 metre.
The focal length of a lens depends on the (i) radii of curvatureof its surfaces and (ii) on the index of refraction of the material the lens is made from.
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Power of lens is the ability of the lens to converge the rays of light falling on it. It can also be defined as P=1/f where f is the focal length. ... Dioptre is the S I unit of power of lens. One Dioptre is the power of a lens whose focal length is 1 metre. The power of lens depends on focal length.
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