A radioactive element has a half life of 200 days The percen

Question

A radioactive element has a half life of 200 days. The percentage of original activity remaining after 83 days is ___________. (Nearest integer) (Given : antilog 0.125 = 1.333, antilog 0.693 = 4.93)

DivineJEE · Accepted Answer

lambda=(2.303 / t) log fracA_0A (0.693 / 200)=(2.303 / 83) log fracA_0A \ fracAA_0=0.75 Hence, percentage of original activity remaining after 83 days is 75 \%

Explanation

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