If alpha particle, proton and electron move with the same momentum, them their respective de Broglie wavelengths `lamda_(alpha),lamda_(p),lamda_(e)` are related as

If alpha particle, proton and electron move with the same momentum, then their respective de Broglie wavelengths lambda_(alpha), lambda_(p), lambda_(e ) are related as

The de-Broglie wavelength lamda

An electron of mass m_(e) and a proton of mass m_(p) are moving with the same speed. The ratio of their de-Broglie wavelength lamda_(e)//lamda_(p) is