Chapter 29, Problem 34PE

### 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

# How many x-ray photons per second are created by an x ray tube that produces a flux of x rays having a power of 1.00 W? Assume the average energy per photon is 75.0 keV.

To determine

The x-ray photons per second are created by an x-ray tube that produces a flux of x rays having a power of 1.00 W .Assume the average energy per photon is 75.0 keV .

Explanation

Given info:

â€ƒâ€ƒp=1.00Â W

â€ƒâ€ƒE=75.0Ã—103Â eV

Calculation:

The number of photons per second are emitted by the flux of x- rays the satellite, we get

â€ƒâ€ƒp=nEÂ Â

Substituting the given values

â€ƒâ€ƒn=pEÂ Â

Substituting the given values of joule in term of electron volt, we get

â€ƒâ€ƒ1J=11.6Ã—10âˆ’19Â eV

â€ƒâ€ƒn=1

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