A star is observed with a surface temperature of 3000 K and a luminosity of 105 times that of the Sun. Based on the H-R diagram shown above, what is the approximate radius of this star?

A) 10 solar radii
B) 102 solar radii
C) 103 solar radii
D) The radius cannot be determined.


C) 103 solar radii

Physics & Space Science

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A helium-neon laser beam in a vacuum is

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