Pearson eText -- Physics for Scientists and Engineers with Modern Physics -- Instant Access (Pearson+)
Pearson eText -- Physics for Scientists and Engineers with Modern Physics -- Instant Access (Pearson+)
5th Edition
ISBN: 9780137488179
Author: Douglas Giancoli
Publisher: PEARSON+
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Chapter 37, Problem 1Q
To determine

The relative temperatures of stars

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Answer to Problem 1Q

The reddish star is coolest, bluish star is hottest and whitish-yellow star temperature is greater than reddish star and lesser than bluish star.

Explanation of Solution

Color of the star determines its temperatures. Since, the temperature is related to the frequency of the emitted light, the light with greater frequency has greater temperature and the light with lesser frequency has lesser temperature.

Among red, whitish-yellow, and blue color, red color is at the lowest frequency, followed by a whitish-yellow. Blue color is at highest frequency. Therefore, the reddish star is coolest, bluish star is hottest and whitish-yellow star temperature is greater than reddish star and lesser than bluish star.

Conclusion:

Therefore, hottest star among the three is bluish star, the coolest is reddish star, and the whitish- yellow star is in between the bluish and reddish star.

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