Question

If the power of convex lens is +5.0 D, then its focal length is 50 cm (true or false)​

Answer 1

Answer:

true

Explanation:

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Answer 2

false

Explanation:

Given that:

power of lens, $P=+5\ D$

Power of the lens is the inverse of its focal length.

$D=\frac{1}{f}$

$5=\frac{1}{f}$

$f=0.2m$

$f=20\ cm$

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