Question

Deeksha determined the focal length of a

glass piece X by focusing a distant object

on the screen as shown in the following

diagram.

Screen




Which of the following statement is correct?

(a) Device X is a concave mirror and distance

d is its focal length.

(b) Device X is a concave mirror and distance

d is its radius of curvature.

(c) Device X is a convex lens and distance d

is its radius of curvature.

(d) Device X is a convex lens and distance d

is its focal length.​

Answer 1

Answer:

Option (C) is your correct answer

Explanation:

Because the rays are getting converged, and getting focused on the given screen.

Hence, it is convex lens and its focal length.

I hope it helps you!