Question

A convex lens is of focal length 25 cm. What is its power?
how to solve it ?​

Answer 1

focal length of convex lens= 25cm

power= 1/f ( in meter)

but for cm

there is two way to solve it

first you con change it into cm

otherwise you will apply formula

and the formula =100/f

100/25=4

hope it's helpful for you

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please mark be brainly

Answer 2

-4.0 D is the answers......