Answer
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, $253/2 = 127K$.
College Physics (4th Edition)
by Giambattista, Alan; Richardson, Betty; Richardson, Robert
Published by
McGraw-Hill Education
ISBN 10:
0073512141
ISBN 13:
978-0-07351-214-3
Chapter 14 - Multiple-Choice Questions - Page 532: 2
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