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MHT CET Medical202625 April 2026Morning ShiftPhysicsDual Nature of MatterActual

An electron and positron are accelerated from rest to the same kinetic energy. The ratio of their de Broglie wavelengths is

Options

  1. A1:2
  2. B2:1
  3. C1:4
  4. D1:1

Correct answer

D. 1:1

Step-by-step solution

The de Broglie wavelength is given by = h p = h 2mK Since both the electron and positron have the same mass ( m ) and are accelerated to the same kinetic energy ( K ), their de Broglie wavelengths will be equal. Therefore, the ratio of their de Broglie wavelengths is 1:1 . Answer: 1:1

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