Two Objects Are Placed in a Room with a Temperature

Multiple Choice

Two objects are placed in a room with a temperature of 20°C. Object A has a temperature of 70°C, while object B has a temperature of 140°C. They have the same emissivity, but different areas. What should the ratio of the area of object A to that of object B be if the net power emitted by both objects is the same?

A) 2.0
B) 3.4
C) 5.2
D) 17
E) 21