Question

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

Answer 1

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

Please mark it as brainliest.