Physics

Problem

Black body X has a surface area of

A

and an absolute temperature of

T

. Black body Y has a surface area of

2A

and a temperature of

\frac{T}{2}

. Which of the following is the best estimate for the ratio of the emitted power of X to Y,

\frac{P_X}{P_Y}

? a. 16 b. 8 c. 4 d. 1