An object O, in air, is in front of the concave spherical refracting surface of a piece of glass. Which of the general situations depicted below is like this situation?
A) I
B) II
C) III
D) IV
E) V

Question

An object O, in air, is in front of the concave spherical refracting surface of a piece of glass. Which of the general situations depicted below is like this situation? 
A) I 
B) II 
C) III 
D) IV 
E) V

Quizplus · Accepted Answer

In situation III, the convex side of the piece of glass faces the air, which is like the situation where an object is in front of a concave spherical refracting surface of a piece of glass.

An Object O, in Air, Is in Front of the Concave