NEET Physics Nuclei Questions Solved


If T is the half life of a radioactive material, then the fraction that would remain after a time T2 is 
(a) 12              (b) 34
(c) 12           (d) 2-12

(c) Fraction remains after n half lives

NN0=12n=12t/T NN0=12T/2T=121/2=12

 

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