Rigel B, a blue-hot star, has the same luminosity as Arcturus, a yellow-hot star. Rigel B is ___________ compared to Arcturus.
A. cooler and smaller.
B. cooler and larger.
C. hotter and smaller.
D. hotter and larger.
Answer:C
Rigel B, a blue-hot star, has the same luminosity as Arcturus, a yellow-hot star. Rigel B is ___________ compared to Arcturus.
A. cooler and smaller. B. cooler and larger. C. hotter and smaller. D. hotter and larger.