Question

The power of lens of focal length is 80cm if diopter is

Answer 1

Power is 100÷80=1.25 D

Answer 2

Answer:

Explanation:

GIVEN:

focal length=80cm=0.8 m

TO FIND:

power of the lens

we know that

power=1/focal length

p=1/0.8

p=+1.25D

power of lens is +1.25D

FORMULAS USED

power=1/focal length