Physics, asked by ramkumarprasad641, 7 months ago

the focal length of a convex lens is 25cm. what is it's power.

Answers

Answered by tt821057

0

Answer:

+4D

Explanation:

P=1/f

f=25cm=0.25m

P=1/0.25=4D

Since ,it is a convex lens, the power is positive.

Thus, P=+4D

Thanks

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