UNIVERSE
PLANETARY INTERIORS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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reddish orange with low luminosity and high surface temperature
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reddish orange with high low luminosity and low surface temperature
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blue white with low luminosity and low surface temperature
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blue white with high luminosity and high surface temperature
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Detailed explanation-1: -Betelgeuse is not only among the largest, but also one of the most luminous stars of its class. At a distance of roughly 425 light-years, it is the seventh brightest star in the northern hemisphere.
Detailed explanation-2: -Betelgeuse has a spectral type of B3V, a surface temperature of 3500° Kelvin and a luminosity 140, 000 times the Sun. It has a mass of 18 solar masses and a diameter 1180 times the Sun.
Detailed explanation-3: -Betelgeuse, the bright orange-red star, is only a little more than half as hot as our sun – 3, 500 degrees Kelvin – yet it has about 20 times the mass. Betelgeuse is cool because its mass is spread over a very large area; Betelgeuse’s diameter is about 150, 000 times that of the sun.