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Solution to task 628 from Chertov´s for extramural stud
Sold: 0
Uploaded: 17.12.2020
Content: 628.zip 26,84 kB
Uploaded: 17.12.2020
Content: 628.zip 26,84 kB
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628. A monoenergetic electron beam illuminates a spot with a radius of r ≈ 10-3 cm in the center of the screen of a cathode-ray tube. Using the uncertainty relation, find how many times the uncertainty Δx: the coordinates of an electron on the screen in the direction perpendicular to the tube axis are less than the spot size r. The length L of the cathode-ray tube is taken equal to 0.50 m, and the voltage U, accelerating the electron, equal to 20 kV.
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