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What is the time during which one half of a number of radioactive species decays or one half of their activity ceases?

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What is the time during which one half of a number of radioactive species decays or one half of their activity ceases?

(a) Half Life

(b) Super critical state

(c) Semi life

(d) Critical life

I got this question in an online interview.

This interesting question is from Atomic Structure topic in section Nuclear Power Plant of Energy Engineering

1 Answer

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Best answer
Correct option is (a) Half Life

Easiest explanation: Half life is the time during which one half of a number of radioactive species decays or one half of their activity ceases. It is also used to characterize any type of exponential and Non-exponential decay.

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