What is meant by power of lens?what does (+ve odd -ve)indicate? State it’s s.i unit.how is this unit related to focal length of the lens????(reply fast experts)
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Power of lens is the ability of the lens to converge the rays of light falling on it. Definition: The power of a lens is the reciprocal of its focal length in meters.
P =1/f
SI Unit : Dioptre
Convex lens Is POsitive !
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