Question

What kind of lens can form:
(a) an inverted image larger than the object?
(b) an erect image larger than the object?
(c) an inverted image smaller than the object?
(d) an erect image smaller than the object?

Answer 1

A) convex lens,between F and 2F
B) convex lens,between F and optical center
C)convex lens,beyond 2F
D) concave lens ,anywhere

F is focus

Answer 2

(a) convex
(b)convex
(c)convex
(d)concave