NEET Physics Nuclei Questions Solved


In a sample of radioactive material, what fraction of the initial number of active nuclei will remain undisintegrated after half of a half-life of the sample 
(a) 14        (b) 122
(c) 12     (d) 22

(c) NN0=12t/T1/2121/2=12

Difficulty Level:

  • 27%
  • 27%
  • 40%
  • 9%
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