Question

The power of a concave lens is 12.50 .what is the focal lenght of the lens?

Answer 1

Answer:

the  focal length of the lens is 0.08 metres

Explanation:

P=$\frac{1}{f}$ where f is measured in metres

=>12.50 = $\frac{1}{f}$

=>f =$\frac{10}{125}$ = 0.08 metres

Answer 2

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Focal length = 0.08 m