Teaching UKPSC Lecturer Mock Test Series 2024 Physics Nuclear Physics Radioactivity

A radioactive sample at any instant has its disintegration rate of 5000 disintegrations per minute. After 5 minutes, the rate is 1250 disintegrations per minute. The decay constant (per minute) is

1

0.8 ln 2

2

0.4 ln 2

3

0.2 ln 2

4

0.1 ln 2

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