Physics, asked by venuNaidu2172, 1 year ago

A radioactive sample has an initial activity of 50 dpm, 20 minute later, the activity is 25 dpm. how many atoms of the readioactive nuclide were there originally ?

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Answered by ramnroyh807
1
A radioactive sample has an initial activity of 50 dpm, 20 minute later, the activity is 25 dpm. how many atoms of the readioactive nuclide were there originally 
ANSWER IS 20

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