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What is the power of lensâ€‹

Answers (1)

S Safeer PP

Power is defined as the tangent of angle by which a beam of light falling a unit distance from optical centre converges or diverges.

For $\delta$ is small and h=1

Power $P=\frac{1}{f(meter)}$

Unit $m^{-1}$ or Diopter.

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