1) When uncertainty in position and momentum are equal, then the uncertainty in velocity is A) $\sqrt{\frac{h}{\pi}}$ B) $\frac{1}{2}\sqrt{\frac{h}{\pi}}$ C) $\frac{1}{2m}\sqrt{\frac{h}{\pi}}$ D) $2m\sqrt{\frac{h}{\pi}}$ Answer: Option CExplanation: $\triangle x= \triangle p$ $\triangle p^{2}= \frac{h}{4 \pi}$ or $\triangle p=\frac{1}{2}\sqrt{\frac{h}{\pi}}$ $m\triangle v=\frac{1}{2}\sqrt{\frac{h}{\pi}}$ or, $\triangle v=\frac{1}{2m}\sqrt{\frac{h}{\pi}}$
