Question

An electron is accelerated through a potential difference of 10000 v what is its de broglie wavelnegtjh

Answer 1

wavelength = h/ √(2meV)

m=9.1*10-³¹kg

e=1.6*10-¹9

V = 10⁴ V

h = 6.626*10-³⁴Js

By substituting all these values

wavelength = 1.2×10^-7