Answer
2
Work Step by Step
As we know that $p=\frac{h}{\lambda}$
and $E=pc$
$\implies Energy \propto momentum$
Thus, if momentum is doubled then the energy of a photon will also be doubled.
Physics Technology Update (4th Edition)
by Walker, James S.
Published by
Pearson
ISBN 10:
0-32190-308-0
ISBN 13:
978-0-32190-308-2
Chapter 30 - Quantum Physics - Problems and Conceptual Exercises - Page 1075: 37
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