JEE Main & Advanced
Sample Paper
JEE Main - Mock Test - 24
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\[1.675 \times 1{{0}^{-}}^{27}\,kg\] \[\left( h = 6.6 \times 1{{0}^{-}}^{34}J-s \right)\].