## Conceptual Physics (12th Edition)

Published by Addison-Wesley

# Part 6 - Multiple-Choice Practice Exam: 30

#### Answer

Planck's constant can be found by dividing the energy of a photon by its frequency.

#### Work Step by Step

The Planck equation shows that the energy of a photon is proportional to its frequency. Planck's constant is the constant of proportionality. This is discussed on page 564.

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