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Controlled Nuclear Reaction

Fast neutrons...

Question

Fast neutrons can easily be slowed down by:

A

The use of lead shield

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B

Passing them through heavy water

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C

Elastic collision with heavy nucleus

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D

Applying a strong electric field

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Solution

The correct option is C Passing them through heavy water
Neutrons can easily be slowed down by heavy water because heavy water contains proton. Being of same mass the fast moving proton passes its KE easily to deuterium protons.

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