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NEET2019PhysicsDual Nature of MatterActual

The potential difference V required for accelerating an electron to have the de Broglie wavelength of 1 Å is

Options

  1. A100 ~V
  2. B125 ~V
  3. C150 ~V
  4. D200 ~V

Correct answer

C. 150 ~V

Step-by-step solution

aligned & de Broglie wavelength, = h p = h 2 m e V & V= h^2 2 m e ^2 & V= (6.63 10⁻³⁴ )^2 2 9.1 10⁻³¹ 1.6 10⁻¹⁹ (10⁻¹⁰ )^2 & =150.95 ~V 150 ~V . aligned

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