The measurement of the electron position is associated with an uncertainty in momentum, which is equal to `1 xx 10^-18 g cm s^-1`. The uncertainty in electron velocity is (mass of an electron is `9 xx 10^-28 g`)

Options

A. `1xx10^(8)cm s^(-1)`
B. `1xx10^(11) cm s^(-1)`
C. `1xx10^(9) cm s^(-1)`
D. `1xx10^(6) cm s^(-1)`

Answer

C

Explanation

`Delta p(m. Deltaupsilon)=1xx10^(-18) g cm s^(-1)`
`Delta upsilon=((1xx10^(-18) g cm s^(-1)))/((9xx10^(-28)g))`
`=0.1xx10^(10)=1xx10^(9) cm s^(-1)`