If `E_1, E_2` and `E_3` represent respectively the kinetic energies of an electron, an alpha particle and a proton respectively each having same deBroblie wavelength then which is incorrect relation?

Options

A. `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

B, C, D

Explanation

`lambda_e = lambda_x = lambda_p`
`implies h/((mv)_2) = h/((mv)_x) = h/((mv)_P) therefore lambda alpha 1/(sqrt(KE.m))`