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An electron is located with an uncertainity equal to its uncertainity in its momentum. What will be its uncertainity in velocity (symbols have usual meaning)A. `sqrt(h/(4pi))`B. `h/(4pi)`C. `1/(2m) sqrt(h/(pi))`D. not possible

Answer» Correct Answer - 4
`DeltaP^(2)=sqrt(h/(4pi))`
`m Deltav=sqrt(h/(4pi)) rArr Deltav=1/(2m)sqrt(h/(pi))`
`DeltaV=7.9 xx10^(12)` m /sec. which is greater than C (speed of light)


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