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The neutrons slowed down by moderators are called as ____________

(a) Slowed neutrons

(b) Thermal neutrons

(c) Fission neutrons

(d) Moderated neutrons

This question was posed to me in an interview.

I'm obligated to ask this question of Nuclear fission & Nuclear Reactor in portion Quantum Physics of Engineering Physics I

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Right answer is (b) Thermal neutrons

For explanation: The neutrons which are slowed down by the moderators are referred to as thermal neutrons. The neutron slow down after colliding with the moderators, which are made up of water, heavy water etc.

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