What is the de Broglie wavelength of an object with a mass of $0.1 \ kg$ moving with a velocity of $10 \ m/s$? What does this value indicate?

  • A
    $6.626 \times 10^{-34} \ m$
  • B
    $6.626 \times 10^{-33} \ m$
  • C
    $6.626 \times 10^{-35} \ m$
  • D
    $6.626 \times 10^{-32} \ m$

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The ratio of de-Broglie wavelength of two particles $A$ and $B$ is $2: 1$. If the velocities of $A$ and $B$ are $0.05 \ ms^{-1}$ and $0.02 \ ms^{-1}$,respectively,then the ratio of their masses $m_A: m_B$ must be

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