Question

For a specific glass lens f=0.5 .This is the only Information given to the student.

Which type of lens is given to him and what is its power?

a) power 2D ; convex lens

b) power 1D ; concave lens

c) power -0.5; concave lens

d) power -0.25 D ; convex lens​

Answer 1

options a is the answer of these question.