College Physics (4th Edition)

Published by McGraw-Hill Education
ISBN 10: 0073512141
ISBN 13: 978-0-07351-214-3

Chapter 14 - Multiple-Choice Questions - Page 532: 2


option b

Work Step by Step

According to Stefan-Boltzmann law, $P/A = σT^4$, since the only temperature is changed, If the temperature of the sun is halved, the temperature of the earth will also get halved, $253/2 = 127K$.
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