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Sahay Sir > Question Answers > JEE Mains Physics 2002-2019 Solved Video Solutions > Practice Set 1 > A radioactive sample is undergoing α decay. At any time t1, its activity is A and another time t2, the activity is A/5. What is the average life time for the sample ?

A radioactive sample is undergoing α decay. At any time t1, its activity is A and another time t2, the activity is A/5. What is the average life time for the sample ?

A radioactive sample is undergoing α decay. At any time t1 its activity is A and another time t2 the activity is A/5. What is the average life time for the sample ?