Question

define power of lens,what is its s,i unit

Answer 1

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HERE IS THE ANSWER TO YOUR QUESTION......


The ability of a lens to converge/diverge a beam of light rays is expressed in terms of its power (P). It is the inverse of focal length,f(in meters).

Hence, power of a lens is given by the relation to P=1/F



The SI unit of power is dioptre (D).



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Answer 2

the power of lens is the ability of the lens to converge the ray of light falling on it..
the si unit of power is dioptre..