1.

If `E_1, E_2 and E_3` represent respectively the kinetic energies of an electron, an `alpha - particle` and a proton each having same de-Broglie wavelength, thenA. `E_(1) gt E_(3) gt E_(2)`B. `E_(2) gt E_(3) gt E_(1)`C. `E_(1) gt E_(2) gt E_(3)`D. `E_(1) = E_(2) = E_(3)`

Answer» Use `K.E.=(p^(2))/(2m)`


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