An electron, a proton and an alpha particle have kinetic energies of 16E, 4E and E respectively. What is the qualitative order of their de Broglie wavelengths?

An electron, a proton and an alpha particle have kinetic energies of 1

1.	An electron, a proton and an alpha particle have kinetic energies of 16E, 4E and E respectively. What is the qualitative order of their de Broglie wavelengths?
Answer» `lambda_egt lambda_p = lambda_a` `lambda_p= lambda_a GT lambda_e` `lambda_pgt lambda_e gt lambda_a` `lambda_agt lambda_e gt gtlambda_p` SOLUTION :`LAMBDA = H/(SQRT(2mKE))`