what is power of lens? what is s.i. unit ? name the type of lens whose power is positive
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power of a lens is its ability to bend light .
SI unit for optical power is the inverse metre (m−1) also known as dioptre.
Converging lenses have positive optical power.
SI unit for optical power is the inverse metre (m−1) also known as dioptre.
Converging lenses have positive optical power.
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power of lens is reciprocal of its focal length
P=1/f
si unit is dioptre
covex lens has power always positive
P=1/f
si unit is dioptre
covex lens has power always positive
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