Chapter 29, Problem 20PE

### College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000

Chapter
Section

### College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000
Textbook Problem

# What is the energy in joules and eV of a photon in a radio wave from an AM station that has a 1530-kHz broadcast frequency?

To determine

Energy in joules and eV of a photon in a radio wave.

Explanation

Given:

Frequency of wave =f=1530Â kHzÂ =Â 1530000Â HzÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (SinceÂ 1kÂ =Â 1000)

Energy of photon =E=?

Plank's constant =h=6.63Ã—10âˆ’34Â JsÂ =Â 4.14Ã—10âˆ’15Â eV

Formula Used:

Energy of photon is given as

â€ƒâ€ƒE=hf

Calculation:

Energy of photon is given as

â€ƒâ€ƒE=hf

Inserting the values

â€ƒâ€ƒE=(6.63Ã—10âˆ’34)(1530000)E=1

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