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

Options

A. `lamda_alpha =lamda_p = lamda_e`
B. `lamda_alpha lt lamda_p lt lamda_e`
C. `lamda_alpha gt lamda_p gt lamda_e`
D. `lamda_p gt lamda_e gt lamda_alpha`

Answer

A

Explanation

`lamda = h/P , as P_(alpha) = P_(p) = P_(e) implies lamda_(alpha) = lamda_(p) = lamda_(e)`