X and Y are two spherical black-body radiators

PHYSICS · Subjective · AP · Physics 2: Algebra-based · Modern Physics · Modern Physics

Problem

X and Y are two spherical black-body radiators. X has a radius

R

and emits half the total power of Y. The absolute temperature of X is double that of Y. What is the radius of Y? A.

2\sqrt{2}R

4R

4\sqrt{2}R

16R