Draw ray diagrams showing the image formed by a convex lens when the object is: (i) beyond 2F, (ii) at 2F, (iii) between F and 2F, and (iv) between F and the optical centre.

Question

Accepted Answer

(i) Object beyond 2F: image forms between F and 2F on the other side — real, inverted, diminished (as in a camera). (ii) Object at 2F: image forms at 2F on the other side — real, inverted, same size as object. (iii) Object between F and 2F: image forms beyond 2F on the other side — real, inverted, magnified (as in a projector). (iv) Object between F and optical centre: image forms on the same side as the object — virtual, erect, magnified (as in a magnifying lens).