The linear momentum of an electron, initially at rest, accelerated through a potential difference of 100 V is 

Options

A. `9.1 xx10^(-24)`
B. `6.5 xx10^(-24)`
C. `5.4 xx10^(-24)`
D. `1.6 xx10^(-24)`

Answer

C

Explanation

`lamda_e= (1.227)/(sqrtV) nmimplies h/P=(1.227xx10^(-9))/(sqrt(100))`
`implies P=(6.6xx10^(-34))/(1.227 xx10^(-10))=5.4 xx10^(-24) "ks ms"^(-1)`