Question

Find the power of a concave lens of focal length 6m

Answer 1

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Answer-___❤️

$p = \frac{1}{f} \\ p = \frac{1}{ - 6} \\ p = - 0.15$

Note__✌️

Focal length of cancave lense is negative.

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Answer 2

Answer: -0.167 D

Explanation:

Focal length, f =  - 6 m

Power, P = 1 / f

               = 1 / -6

               = - 0.167 D