The measurement of the electron position is associated with an uncertainty in momentum, which is equal to $1 \times 10^{ –18}$ g $cm s^{ –1}$. The uncertainty in electron velocity is : (Mass of an electron is $9 \times10^{–28}$ g)

Question

( A ) $1 \times 10^5 cm s^{–1}$
( B ) $1\times 10^6 cm s^{–1}$
( C ) $1.1\times10^9 cm s^{–1}$
( D ) $1 \times 10^{11} cm s^{–1}$