Question

define power of a lens

Answer 1

the power of lens is defined as the reciprocal and focal length in meter.
p=1/ focal length ( in meters)
it's si unit is diopter ...
hope it will help you

Answer 2

Power of a lens can be defined as its ability to bend the incident light rays.
It is calculated in the unit Diopter(D)
Formula for power is: -
Power of a lens=
1/f(focal length of the lens IN METRE)

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