GK
NUCLEAR SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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economic power generation.
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sustainment of chain reaction.
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power generation on commercial scale.
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none of these
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Detailed explanation-1: -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 (specifically, its nuclear fission cross-section), density, shape, enrichment, purity, temperature, and surroundings.
Detailed explanation-2: -When k = 1, the mass is critical, and the chain reaction is self-sustaining. A subcritical mass is a mass of fissile material that does not have the ability to sustain a fission chain reaction.
Detailed explanation-3: -Definition: The minimum amount of material produced self-sustaining chain reaction during fission reactions is known as critical mass.
Detailed explanation-4: -If there is a critical mass, which is the minimum amount of nuclear material needed to cause a chain reaction to continue without stopping, of nuclear material present, these neutrons can start new reactions, and the process can continue by itself.
Detailed explanation-5: -critical mass, in nuclear physics, the minimum amount of a given fissile material necessary to achieve a self-sustaining fission chain reaction under stated conditions.