Multiple Choice
A main-sequence star of 25 solar masses has about 25 times the luminosity of a 10-solar-mass star (recall the mass-luminosity relation presented in the previous chapter) .This is because the more massive star
A) has a hotter core, and therefore nuclear burning proceeds more rapidly.
B) has more convection in its core, which heats the material there.
C) has more hydrogen to burn.
D) has more carbon available, which speeds up the CNO cycle.
E) is probably younger than the 10-solar-mass star.
Correct Answer:
Verified
Correct Answer:
Verified
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