NEET Physics Nuclei Questions Solved


The activity of a radioactive sample is measured as N0 counts per minute at t = 0 and N0/e counts per minute at t = 5 min. The time (in minute) at which the activity reduces to half its value is [2010]

(1) loge 2/5          (2) 5loge2           (3) 5 log10 2        (4) 5 loge 2

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