Question

An electron and alpha particle have the same kinetic energy how de broglie wavelength related

Answer 1

Is it right or not...??

Answer 2

As mass of proton=1835times mass of electron

So mass of alpha particle=4 times mass of proton=4×1835×mass of electron

Now wave length of electron=h/√2mK.E

". ". " alpha particle=h/√2mK. E

Now h/√2mK. E×√2mK. E/h

=mass of alpha particle/mass of electron

=4×1835

So wavelength of electron is 4×1835times wave length of alpha particle