Electromagnetic WavesHard
Question
A radioactive sample at any instant has its disintegration rate 5000 disintegrations per minute. After 5 minutes, the rate is 1250 disintegrations per minute.
Then, the decay constant (per minute) is
Then, the decay constant (per minute) is
Options
A.0.4 In 2
B.0.2 In 2
C.0.1 In 2
D.0.8 In 2.
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= 0.4 In 2.