Physics, asked by deep6052, 10 months ago

the power of a lens is +4D, then the focal length is-(a) 20 cm (b) 40 cm (c) 10 cm (d) 25 cm

Answers

Answered by Anonymous

7

Answer

f=1/p=1/4=0.25 metre=25 cm

Answered by prashantyadavji

3

Answer:

f=1/p=1/4=0.25 metre=25 cm

Explanation:

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