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प्रश्न
Define the power of a lens.
Define the term power of a lens.
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उत्तर १
Power of a lens is defined as the ability of a lens to bend the rays of light. It is given by the reciprocal of focal length in metre.
उत्तर २
The power of a lens is a measure of the deviation produced by it in the path of rays refracted through it.
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संबंधित प्रश्न
Calculate the focal length of a corrective lens having power +2.5 D.
State power of a lens S.I. unit.
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