Question

Uncertainty in position of a 0.25 kg particle is `10^(-5)` , uncertainty of velocity is `(h=6.6xx10^(-34) Js)`
A. `1.2xx10^(34)` m/sec
B. `2.1xx10^(-29)` m/sec
C. `1.6xx10^(-20)` m/sec
D. `1.7xx10^(-9)` m/sec

Answer 1

Correct Answer - B
According to `Deltax xx mxx Deltav =h/(4pi) , Deltav=h/(Deltax xx m xx 4pi)`
`=(6.6xx10^(-34))/(10^(-5)xx0.25xx3.14xx4)=2.1xx10^(-29)` m/s