Answer
$K=2$
Work Step by Step
The relation between thermal efficiency$(\eta)$ and coefficient of performance$(K)$ is given as
$K = \frac{1}{\eta} -1$
$ \therefore K = \frac{1}{1/3} -1$
$ K = 3-1$
$K=2$
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (3rd Edition)
by Knight, Randall D.
Published by
Pearson
ISBN 10:
0321740904
ISBN 13:
978-0-32174-090-8
Chapter 19 - Heat Engines and Refrigerators - Exercises and Problems - Page 551: 30
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