Question

An electron with velocity `v` is found to have a certain value of de Brogle wavelength .The velocity that the muetron should process to have the same de Broglie wavelength is
A. v
B. `n//1840`
C. `1840 v`
D. `1840//v`

Answer 1

`lambdda_(e) = (h)/(m_(e)v_(e))`
lambda _(n) = (h)/(m_(n)v_(n))`
`(h)/(m_(e)v_(e)) = (h)/(m_(n)v_(n))`
`v_(n) = (m_(e)v_(e))/(m_(n)) = (1)/(1840) xx V_(e)" "(m_(2)=1/(1840)mn)`