White dwarfs
A) are young stars.
B) are old stars.
C) may be of any age.
D) are extremely rare.
Correct Answer:
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Q16: The sun is an)
A) unusually small star.
B)
Q17: The duration of the sunspot cycle is
Q18: The temperature of the sun's photosphere is
Q19: Which of the following can appear as
Q20: Advantages of large reflecting telescopes include their
Q22: The majority of main-sequence stars are
A) blue.
B)
Q23: The color of a relatively hot star
Q24: Stars at the lower end of the
Q25: The sun will remain its present size
Q26: In the HR diagram, most stars are
A)
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