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A shield of material that reflects neutrons is placed around a radioactive sample.


Which change in the nuclear reaction is most likely to happen?

AA chain reaction will be sustained in a subcritical mass.

BThe chain reaction in a critical mass will stop.

CA chain reaction will occur at a constant rate in a critical mass.

DThe chain reaction in a supercritical mass will slow down.

Verified Answer :

the answer is A. just took the test

Answer;

A) A chain reaction will be sustained in a sub-critical mass

Explanation;

  • Critical mass is the minimum or the smallest amount of a given fissile material necessary to achieve a self-sustaining fission chain reaction under stated conditions.
  • A subcritical mass is a mass of fissile material that does not have the ability to sustain a fission chain reaction.

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