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KCET2009PhysicsDual Nature of Matter

The kinetic energy of an electron gets tripled, then the de-Broglie wavelength associated with it changes by a factor

Options

  1. A1 3
  2. B3
  3. C1 3
  4. D3

Correct answer

C. 1 3

Step-by-step solution

de-Broglie wavelength of an electron is given by = h mv = h 2 mK or 1 K ^ = 1 3 ~K K 1 = 1 3 or ^ = 3 Hence, de-Broglie wavelength will change by factor 1 3 .

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