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Question:- The counting rate from a radioactive source is 4000 counts per second at time t = 0. After 10 s, the counting rate is

Question:- The counting rate from a radioactive source is 4000 counts per second at time t = 0. After 10 s, the counting rate is 1000 counts per second. (a) What is the half-life? (b) What is the counting rate after 20 s?

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a To find the halflife we can use the formula for radioactive decay N N0 12tT where ... blur-text-image

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