NEET Physics Nuclei Questions Solved


The half life of a radioactive element which has only 132 of its original mass left after a lapse of 60 days is

(a) 12 days                  (b) 32 days
(c) 60 days                  (d) 64 days

(a) N032=N01260/T5=60TT=12 days

Difficulty Level:

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