GK
SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The HOTTEST stars are usually what color
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yellow
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orange
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blue
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pink
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Explanation:
Detailed explanation-1: -The colour provides a fundamental piece of data in stellar astrophysics-the surface temperature of the star. The hottest stars are blue and the coldest are red, contrary to the use of colours in art and in our daily experience.
Detailed explanation-2: -Hot stars appear blue because most energy is emitted in the bluer parts of the spectrum. There is little emission in the blue parts of the spectrum for cool stars-they appear red.
Detailed explanation-3: -The hottest stars tend to appear blue or blue-white, whereas the coolest stars are red. A colour index of a star is the difference in the magnitudes measured at any two wavelengths and is one way that astronomers measure and express the temperature of stars.
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