Multiple Choice
The bright star named Rigel has a luminosity of 66,000 L and a temperature of 11,000 K.What is its radius? Note that the temperature of the Sun is 5,800 K.
A) 5 R☉
B) 30 R☉
C) 70 R☉
D) 135 R☉
E) 190 R☉
Correct Answer:
Verified
Correct Answer:
Verified
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