Choose the only correct statement out of the following:

  • A
    Only a charged particle in motion is accompanied by matter waves.
  • B
    Only subatomic particles in motion are accompanied by matter waves.
  • C
    Any particle in motion, whether charged or uncharged, is accompanied by matter waves.
  • D
    No particle, whether at rest or in motion, is ever accompanied by matter waves.

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An electron of mass $m$ and a photon have the same energy $E$. The ratio of the de-Broglie wavelengths associated with them is ($c$ = velocity of light in air).

$A$ photon and an electron have equal energy $E$. The ratio of $\lambda(\text{electron})$ to $\lambda(\text{photon})$ is proportional to

An electron of mass $m$ when accelerated through a potential difference $V$ has a de-Broglie wavelength $\lambda$. The de-Broglie wavelength associated with a proton of mass $M$ accelerated through the same potential difference will be:

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