Physics, asked by PrakharSaraswat, 9 months ago

power of the lence is -40 find it focal length

Answers

Answered by agni4843

0

Answer:

I think -20is the focal length

Answered by gurramvaishnavi555

0

Answer:

-2.5

Explanation:

p=100/f [in cm]

so -40=100/f

f= -100/40

f=-2.5

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