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KCET2008PhysicsDual Nature of Matter

If an electron and a proton have the same de-Broglie wavelength, then the kinetic energy of the electron is

Options

  1. Azero
  2. Bless than that of a proton
  3. Cmore than that of a proton
  4. Dequal to that of a proton

Correct answer

C. more than that of a proton

Step-by-step solution

Given, aligned &= h m v = h 2 m K E K E &= h² 2 m ² aligned KE = h ² 2 ~m ² As is same for both electron and proton So, KE 1 ~m Hence, kinetic energy will be maximum for particle with lesser mass, electron.

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