Question

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

(a) 1 x 10⁵ cm s^-1 

(b) 1 x 10¹¹ cm s^-1 

(c) 1 x 10⁹ cm s^-1 

(d) 1 x 10⁶ cm s^-1 

Answer 1

The correct option is : (c) 1 x 10⁹ cm s^-1 

Explanation :

Uncertainty in momentum

(m Δ v) = 1 x 10^-18 g cm s^-1 

Uncertainty in velocity,