Tutorials in Introductory Physics
Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Chapter 14.1, Problem 2aT
To determine

The better model to see the same behavior of electron.

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Imagine a single photon traveling from the laser toward the single slit. Assume that the photon passes through the slit. Explain what the trajectory of the photon would be after passing through the slit. Hint: the Huygens-Fresnel principle applies to individual photons.
Determine the de Broglie wavelength for i. an electron (mass = 9.1 x 10-31 kg) moving at a speed of 6.0 × 10 m/s and ii. a baseball (mass = 0.15 kg) moving at a speed of 13 m/s. iii. Can you explain why does the baseball not show any diffraction pattern if it passes through the window of width ~ 1m?
The width of the central bright fringe in a diffraction pattern on a screen is identical when either electrons or optical light pass through a single slit. The distance between the screen and the slit is the same in each case and is large compared to the slit width. If the wavelength of the optical light is 552 nm, how fast are the electrons moving?Give your answer in units of m/s, accurate to 2 decimal places
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