NEET Physics Nuclei Questions Solved


What fraction of a radioactive material will get disintegrated in a period of two half-lives 
(a) Whole             (b) Half
(c) One-fourth      (d) Three-fourth

(d) NN0=12n, n = 2NN0=122=14

So disintegrated part = 1-NN0=1-14=34

Difficulty Level:

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