The focal power of a lens has the dimension?
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The power of lens is defined as the tangent of the angle by which it converges or diverges a ray of light parallel to the principal axis incident at unit distance from the optical centre,
p=1/f
the s.i unit of power of lens is dioptre.(D).
p=1/f
the s.i unit of power of lens is dioptre.(D).
Answered by
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The focal power of lens has the dimensions [L to the power -1]
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