What is the unit of power …
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Posted by Tapas Kurmimunda Patel 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
The reciprocal of focal length of the lens is called the power of the lens (P).
P (in dioptre) = 1/f(in meters)
The S.I unit of power of lens is diopter denoted by D.
From the formula of power of lens.
1 D = 1/1m = 1m-1
Thus 1 Dioptre is the power of the convex lens having focal length of 1m.
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