Question

Heisenberg's uncertainty principle can be explained as

• A. $ \Delta x\ge \frac{\Delta p\times h}{4\pi } $
• B. $ \Delta x\times \Delta p\ge \frac{h}{4\pi } $
• C. $ \Delta x\times \Delta p\ge \frac{h}{\pi } $
• D. $ \Delta p\ge \frac{\pi h}{\Delta x} $

Answer 1

Answer: (B)

Heisenberg's uncertainty principle: It is not possible to determine precisely both the position and the momentum (or velocity) of a small moving particle (eg, electron, proton etc) $ \Delta x.\Delta p\ge \frac{h}{4\pi } $ where $ \Delta x,\Delta p $ are the uncertainties with regard to position, momentum respectively.