Physics Technology Update (4th Edition)

Published by Pearson
ISBN 10: 0-32190-308-0
ISBN 13: 978-0-32190-308-2

Chapter 30 - Quantum Physics - Conceptual Questions - Page 1072: 9

Answer

Please see the work below.

Work Step by Step

We know that the second metal has a greater work function (the minimum energy required to eject an electron) as compared to the first metal. Thus, a shorter wavelength photon with higher frequency/energy will supply the additional energy to eject an electron from the other surface.
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