Question

What is the de broglie wavenlength of a neutron with kinetic enrgy of 150eV

Answer 1

Solution :
Kinetic energy of neutron E=150eV
=150×1.6×10−19
Mass of neutron m=1.675×10−27
kinetic energy of neutron E=1/2mv^2

(ie) mv=√2EM−

λ=h/mv
. =h/√2em
=6.63×10−34/√2×150×1.6×10−19×1.675×10−27
=2.33×10−12m