Quantum numbers of an atom can be defined on the basis of

  • A
    Hund's rule
  • B
    Aufbau's principle
  • C
    Pauli's exclusion principle
  • D
    Heisenberg's uncertainty principle

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$A$ dust particle has a mass of $10^{-11} \, g$,a diameter of $10^{-4} \, cm$,and a velocity of $10^{-4} \, cm \, sec^{-1}$. If the error in the measurement of velocity is $0.1 \%$,what is the uncertainty in its position?

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Which of the following statements is $correct$?

The moving bullet of a gun has $10 \ g$ mass and $10^{-5} \ m$ uncertainty in position. Find the uncertainty in velocity.

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