Bitsat
Atoms And Nuclei
BITSAT 2021
MCQ+3 / -12021
A proton has kinetic energy E = 100 eV which is equal to that of a photon. The wavelength of photon is \(\lambda\)2 and that of proton is \(\lambda\)1. The ratio \({{{\lambda _2}} \over {{\lambda _1}}}\) is proportional to