The colour of a star is a direct indicator of its surface temperature. Cooler stars appear red (around 3,000 K), while hotter stars appear blue or blue-white (above 10,000 K). Stars with intermediate temperatures, like our Sun, appear yellowish- white (around 5,800 K). This relationship is described by Wien's Displacement Law, which relates temperature to the peak wavelength of emitted radiation.
The colour of the Star is an indication of its
Asked in UPPCS Prelims 2005 · Topic: Space (Stellar Structure, Evolution, and Nucleosynthesis)
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