Choose the correct statement.

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

In a $He$ atom,the uncertainty in the position of an $e^-$ is equal to the uncertainty in its momentum $\Delta p$. If the value of $\Delta p$ for the $e^-$ is $32 \times 10^5$,then the value of $\Delta p$ for the $He$ atom is .....

$A$ 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?

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

The simultaneous determination of the exact position and momentum of an electron is: