Physics, asked by ipsita, 11 months ago

Power of a lens is 0.4 D .
What is it's focal length?

Answers

Answered by Anonymous

5

Explanation:

Power of lens (P) = 1/f

f = 1/P = 1/0.4 = 10/4 = 2.5 m

Answered by ksidhu1814

2

Focal length=1/Power

F=1/0.4=2.5 mts =250 cm

So F=250 cm.

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