If two stars of different luminosity have the same temperature,a luminosity class II star will be smaller than a luminosity class V star.

Name: If two stars of different luminosity have the same temperature,a luminosity class II star will be smaller than a luminosity class V star.
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Luminosity class II stars are bright giants, larger and more luminous than main-sequence stars (luminosity class V) of the same temperature, due to their larger radii and higher luminosity.

If Two Stars of Different Luminosity Have the Same Temperature,a