Question

what effect does supercritical mass have on a nuclear reaction?
the reaction rate increases.
the reaction produces less energy.
the reaction involves increased fusion.
the reaction produces fewer neutrons.

Explanation:

Super - critical mass in a nuclear reaction means there are more neutrons available to cause further fissions. This leads to an increase in the number of reactions per unit time, thus increasing the reaction rate.

Answer:

The reaction rate increases.