Question

A convex lens is of focal length of 10 cm ? what is its power ?

Answer 1

Power P=1/f(in meters)

because f=10 cm=0.1meter therefore P=1/0.1D

or P=10 D

Answer 2

✌️✌️hey mate,

➡️The power of the convex lens is reciprocal of its focal length.

so,

Power = 1/focal length

Power = 1/10

Power = 0.10 diopter

thanks...
nice to help you ✌️✌️