NEET Physics Nuclei Questions Solved


Three fourth of the active decays in a radioactive sample in 3/4 sec. The half life of the sample is 
(a) 12 sec            (b) 1 sec
(c) 38 sec            (d) 34 sec

(c) 34th active decay takes place in time

t=2(T1/2)34=2T1/2T1/2=38 sec

Difficulty Level:

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