Question

A particle of mass one microgram is confined to move along one direction (x- axis) within a region 1 mm in extension. What is the uncertainity in its velocity?

• A. 3.313x10^-10cm^-1
• B. 5.012x10^-20cm^-1
• C. 8.325x10^-20cm^-1
• D. 5.27x10^-21cm^-1

Answer 1

The correct option is D

5.27x10^-21cm^-1

$△v$ = $\frac{6.625\times {10}^{-27}}{4\times 3.14\times {10}^{-5}\times {10}^{-1}}$

= 5.27 $\times$ ${10}^{-21}$ ${cm}^{-1}$