The axes on a Hertzsprung-Russell (H-R) diagram represent
A. mass and luminosity.
B. luminosity and surface temperature.
C. luminosity and apparent brightness.
D. mass and radius.
Answer:B
The axes on a Hertzsprung-Russell (H-R) diagram represent
A. mass and luminosity. B. luminosity and surface temperature. C. luminosity and apparent brightness. D. mass and radius.