MCQ
Thermal neutrons are those which
  • A
    Are at very high temperature
  • B
    Move with high velocities
  • Have kinetic energies similar to those of surrounding molecules
  • D
    Are at rest

Answer

Correct option: C.
Have kinetic energies similar to those of surrounding molecules
c
(c) When fast moving neutrons pass through a moderator, they collide with the molecules of the moderator.

As a result of this the neutrons are in thermal equilibrium with the surrounding molecules of moderator.

These neutrons are called thermal neutrons.

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