Energy Production and Temperature
Apply the Stefan-Boltzmann Law to answer the following questions:
-
Star A and star B have the same suface areas.
If star A has a surface temperature of 2000 K and star B has a surface
temperature of 4000 K, what is the ratio of their luminosities?
-
Star A and star B have the same radii.
If star A has a surface temperature of 5000 K and star B has a surface
temperature of 8000 K, what is the ratio of their luminosities?
You may assume the stars in question to be blackbody radiators.
The Solution