A red supergiant star is found to have a surface temperature of 2500 K and a luminosity 100,000 times that of the Sun. Use the Hertzsprung-Russell diagram in Figure 12-8 in the text to determine its approximate radius compared with that of the Sun.
A) about 10 times larger
B) about 100 times larger
C) about 1000 times larger
D) almost the same

Question

A red supergiant star is found to have a surface temperature of 2500 K and a luminosity 100,000 times that of the Sun. Use the Hertzsprung-Russell diagram in Figure 12-8 in the text to determine its approximate radius compared with that of the Sun. 
A) about 10 times larger 
B) about 100 times larger 
C) about 1000 times larger 
D) almost the same

Quizplus · Accepted Answer

The Answer of A red supergiant star is found to have a surface temperature of 2500 K and a luminosity 100,000 times that of the Sun. Use the Hertzsprung-Russell diagram in Figure 12-8 in the text to determine its approximate radius compared with that of the Sun. 
A) about 10 times larger 
B) about 100 times larger 
C) about 1000 times larger 
D) almost the same

A Red Supergiant Star Is Found to Have a Surface