Question

1, 45. What is called power of lens ? State the SI unit of power of lens and write the formula relating the power of lens and focal length of the lens.
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Answer 1

Answer:

here your answer

power of a lens is defined as the reciprocal of its focal length (according to book ).

actually by what the angle or from how much degrees a light ray bends from the lens called its power

it's s.i unit is diopter , it will be always in meters ..

formula = 1 / focal length in meters

mark me as a brainliest

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