Chapter 29, Problem 43PE

### 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

# Repeat the previous problem for a 10.0-nm-wavelength photon.

To determine

(a)

The momentum of a photon having wavelength 10 nm .

Explanation

Given info:

â€ƒâ€ƒÎ»=10Â nm

â€ƒâ€ƒh=6.63Ã—10âˆ’34Â Jsâˆ’1

Formula used:

For momentum in photon, the relation between photon and wavelength is

â€ƒâ€ƒpâ‰ˆhÎ»

Calculation:

Value of wavelength is in micrometer convert it into m.

â€ƒâ€ƒÎ»=10Ã—10âˆ’9Â m

Now momentum of photon is

â€ƒâ€ƒpâ‰ˆ6

To determine

(b)

The velocity of an electron having the same momentum.

To determine

(c)

The kinetic energy of the electron, and compare it with that of the photon.

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