Question

Define critical mass.​

Answer 1

Answer:

the minimum amount of fissile material needed to maintain a nuclear chain reaction.

Explanation:

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Answer 2

A critical mass is the smallest amount of fissile material needed for a sustained nuclear chain reaction. The critical mass of a fissionable material depends upon its nuclear properties, density, shape, enrichment, purity, temperature, and surroundings. The concept is important in nuclear weapon design