Question

calculate the wave length of an electron moving with th velocity of 2.65 x 10^7 m/s​

Answer 1

The wavelength of an electron is obtained from de-Broglie equation.

λ=  

mv

h

​  

 

   =  

9.11×10  

−31

kg×2.05×10  

7

m/s

6.626×10  

−34

Js

​  

 

   =3.55×10  

−11

m