Question

name the type of lens of the power is -2.00D. find the focal length of this lens​

Answer 1

Answer:

focal length is inverse of power (f = 1/p)

Answer 2

Hence the focal length of the lens is  - 0.05 m

Explanation:

We are given that:

Power of lens = - 2.00 D

It is a concave lens.

It's focal length is given by:

f = 1 / P

f = 1 /- 20

f =  - 0.05 m

Hence the focal length of the lens is 0.05 m