Question

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

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

A) A chain reaction will be sustained in a subcritical mass.

B) The chain reaction in a critical mass will stop.

C) A chain reaction will occur at a constant rate in a critical mass.

D) The chain reaction in a supercritical mass will slow down.

Answer 1

the answer is A. just took the test

Answer 2

Answer;

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

Step-by-step 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.