The ratio of the de-Broglie wavelengths for the electron and proton moving with the same velocity is ($m_p$ = mass of proton,$m_e$ = mass of electron).

  • A
    $m_p : m_e$
  • B
    $m_p^2 : m_e^2$
  • C
    $m_e : m_p$
  • D
    $m_e^2 : m_p^2$

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