What is Quantum mechanics?

  • A
    $A$ branch of science that deals with the motion of microscopic particles.
  • B
    $A$ branch of science that deals with the motion of macroscopic objects.
  • C
    $A$ branch of science that deals with the study of chemical reactions.
  • D
    $A$ branch of science that deals with the study of thermodynamics.

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Similar Questions

Uncertainty in position of a $0.25 \ g$ particle is $10^{-5} \ m$. What is the uncertainty in its velocity? (Given: $h = 6.6 \times 10^{-34} \ J \ s$)

The uncertainties in the velocities of two particles,$A$ and $B$ are $0.05 \ ms^{-1}$ and $0.02 \ ms^{-1}$ respectively. The mass of $B$ is five times that of the mass of $A$. What is the ratio of uncertainties $\frac{\Delta x_A}{\Delta x_B}$ in their positions?

An electron is moving with a velocity of $600 \, m/s$ with an accuracy of $0.005\%$. The uncertainty in its position will be: ($h = 6.6 \times 10^{-34} \, kg \, m^2 \, s^{-1}$,mass of electron $m_e = 9.1 \times 10^{-31} \, kg$)

If uncertainties in the measurement of position and momentum of a microscopic object of mass $m$ are equal,then the uncertainty in the measurement of velocity is given by the expression:

The equation $\Delta x \cdot \Delta p \geqslant \frac{h}{4\pi}$ represents:

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