Question

3) Write the corelation
Focal length : Meter : Power of lens:​

Answer 1

The optical power of a lens is equal to the reciprocal of the focal length of the lens. P = 1/f. SI unit of power is dioptre (D) and that of focal length is metre (m).

Answer 2

The optical power of a lens is equal to the reciprocal of the focal length of the lens. P = 1/f. SI unit of power is dioptre (D) and that of focal length is metre (m).

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