question_answer

For what kinetic energy (in joule) of a neutron will the associated de-Broglie wavelength be\[1.40 \times  {{10}^{-\,10}}m\]? Mass of neutron is\[1.675 \times  1{{0}^{-}}^{27}\,kg\] \[\left( h = 6.6 \times  1{{0}^{-}}^{34}J-s \right)\].

Answer:

\[\left( 6.69 \times  1{{0}^{-}}^{21} \right)\]