An electron of mass $m_{e}$ and a proton of mass $m_{p} = 1836 m_{e}$ are moving with the same speed. The ratio of their de Broglie wavelength $\frac{\lambda_{\text{electron}}}{\lambda_{\text{proton}}}$ will be ....... .

  • A
    $1836$
  • B
    $1$
  • C
    $918$
  • D
    $\frac{1}{1836}$

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