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Question 1 (1 point) Saved Which of the following is closest to the colour index a...

Question 1 (1 point)
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Which of the following is closest to the colour index a star having the same luminosity as the Sun and a radius twice as big as the Sun ?
Question 1 options:

-0.25

0.15

0.50

1.25

0.75
Question 2 (1 point)
Saved
Which of the following is closest to the radius of a star at a distance of 10 pc having an Apparent Magnitude of 0 and whose light spectrum peaks at 5000 Angstroms ?
Question 2 options:

0.5 solar radii

1 solar radii

4 solar radii

8 solar radii

20 solar radii
science   Advanced-Physics   
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question ) wice agRa Tre sav

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