Question

relation between wavelength,plancks constant,charge and mass of an electron and voltage

Answer 1

this is the relations proof

Answer 2

hey...
the relation...is
since..E=mc*2----------1
and also E=hv(here v is for frequency)
or E=hc/lambda(since frequency=c/lambda)--2
now combing 1 and 3 u get
lambda=h/mc