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← ScienceWhich outcome occurs when a subcritical mass of Uranium-235 is compressed using explosives?
A)Neutron moderation slightly increases
B)Runaway chain reaction does not occur✓
C)Criticality is inherently self-limiting
D)Total mass instantaneously becomes supercritical
💡 Explanation
A subcritical mass undergoing compression does not initiate a runaway chain reaction, because neutron multiplication remains below criticality. Therefore, a sustained nuclear fission isn't achieved, rather than immediate supercriticality because compression isn't instantaneous or perfectly uniform.
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