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Physics

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Measurements on two stars indicate that star x has a surface temperature of (5,427°C) and star y has a surface temperature of (9,627°C). If both stars have the same radius, what is the ratio of the luminosity (total power output) of star y to the luminosity of star x? Both stars can be considered to have an emissivity of 1.0.

a) (17.7)
b) (7.9)
c) (3.6)
d) (1.7)

Answer :

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