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Given: Mass of electron =9.11xx10^(-31)k...

Given: Mass of electron `=9.11xx10^(-31)kg` Plank's constant `=6.626xx10^(-34)Js`
The uncertaintly involved in the measurement of velocity with in a distance of `0.1Å` is

A

`5.79xx10^(7)ms^(-1)`

B

`5.79xx10^(8)ms^(-1)`

C

`5.79xx10^(5)ms^(-1)`

D

`5.79xx10^(6)ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
`Deltax=0.1xx10^(-10)=10^(-11)m`
`Deltav=h/(4 pi m Deltax)`
`=(6.626xx10^(-34))/(4xx3.14xx9.11xx10^(-31)xx10^(-11))`
`=5.79xx10^(6)ms^(-1)`
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