The electrons in a television picture tube are typically

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QUESTION:

Problem 5P

The electrons in a television picture tube are typically accelerated to an energy of 10,000 eV. Calculate the momentum of such an electron, and then use the de Broglie relation to calculate its wavelength.

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QUESTION:

Problem 5P

The electrons in a television picture tube are typically accelerated to an energy of 10,000 eV. Calculate the momentum of such an electron, and then use the de Broglie relation to calculate its wavelength.

ANSWER:
  1. Step 1

Since the electron is accelerated in 10000 eV, the kinetic energy of the electron will be 10000 eV. Now we will use the definition of the relativistic energy to calculate the momentum of the electron.

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