Two Stars,A and B,have the Same Emissivity,but the Radii and Surface

question 53

Multiple Choice

Two stars,A and B,have the same emissivity,but the radii and surface temperatures are different with R_A = 0.5R_B,and T_A = 2T_B.Assuming the temperature of space to be negligible,which star radiates the most energy per unit time?

• A)Star A
• B)Star B
• C)Both radiate the same amount of energy per unit time.
• D)More information is needed in order to make a determination.

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