Uncertainty in position of mass ` 25 g` in space is ` 10^(-5) m`. The uncertainty in it's velocity (in `ms^(-1)` is :

Options

A. `2.1 xx 10^-34`
B. `0.5 xx 10^-34`
C. `2.1 xx 10^-28`
D. `0.5 xx 10^-23`

Answer

C

Explanation

`Delta u (h)/(4 pim. Delta x) = (6.626 xx 10^-34)/(4 xx3.14 xx 25 xx 10^-3 xx 10^-5)`
=`2.1 xx 10^-28 m sec^-1`.