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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$A$ particle $A$ of mass $m$ and initial velocity $v$ collides with a particle $B$ of mass $\frac{m}{2}$ which is at rest. The collision is head-on and elastic. The ratio of the de-Broglie wavelengths $\lambda_A$ and $\lambda_B$ after the collision is

Write a note on the electron microscope.

The de-Broglie wavelength of an electron is $0.4 \times 10^{-10} \ m$ when its kinetic energy is $1.0 \ keV$. Its wavelength will be $1.0 \times 10^{-10} \ m$ when its kinetic energy is: (in $keV$)

If a ball of mass $1 \ kg$ has a velocity of $1 \ m/s$,what is its de Broglie wavelength?

For which of the following particles will it be most difficult to experimentally verify the de Broglie relationship?

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