Question

Obtain the de Broglie wavelength of neutron of mass 1.675 x 10-27 kg and kinetic energy of 150 eV.​

Answer 1

Answer:

Here,

K.E. of neutron, E=150eV=150×1.6×10-19J,

mass of neutron, m=1.675×10-27kg.

The interatomic spacing ~1Å(=10-10m) is about a hundred times greater than this wave length.

Therefore, a neutron beam of energy 150 eV is not suitable for differaction experiment.

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