
Concept explainers
The hotter star among, red star and blue star.

Answer to Problem 5RQ
Blue star is hotter than red star.
Explanation of Solution
All objects with temperature absolute zero emit energy in the form of
The frequency is directly related to the temperature. Therefore, hotter the star is, more is the frequency. And smaller will be the wavelength because the wavelength is inversely related to the frequency.
The wavelength of the blue color is lesser than that of yellow color and red color. Therefore, the blue star is the hotter star than the red star.
Conclusion:
Therefore, blue star is hotter than red star.
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