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Rutherford's Set up and Predictions

The half life...

Question

The half life of a radioactive substance, as compared to its mean life, is

A

30

%

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B

60

%

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C

70

%

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D

100

%

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Solution

The correct option is D $70$ %
$h a l f l i f e = {log}_{e} 2 \times m e a n l i f e = 0.693 \times m e a n l i f e \approx 70 % o f m e a n l i f e$

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