Question

For a specific glass lens f = 0.5 m. This is the only information given to the student. Which type of lens is given to him and what is its power?

Options

• power 2 D; convex lens

• power 1 D; concave lens

• power - 0.5 D; concave lens

• power - 0.25 D; convex lens

Answer 1

power 2 D; convex lens