Atoms And Nuclei Question 204

Question: Thermal neutrons are those which [NCERT 1983]

Options:

A) Are at very high temperature

B) Move with high velocities

C) Have kinetic energies similar to those of surrounding molecules

D) Are at rest

Show Answer

Answer:

Correct Answer: C

Solution:

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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