Bio-Physics (M.Phil./Ph.D.) 2017 Panjab University Entrance Exam With Answers

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13.

201T81 has a decay constant of 9.49 × 10−3 hr−1. Find the activity in becquerels of a sample containing 1010 atoms

A: 4.8 X 104 bq
B: 12.6 X 104 bq
C: 2.64 X 104 bq
D: 8.42 X 104 bq (hint Act=lambda Xnumber of atoms, 9.49 X10)

The answer is: C