Activity 1 oL 0 0 500 400 100 300 200 Time (s) The graph above shows the activity of a radon source as a function of tim
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Activity 1 oL 0 0 500 400 100 300 200 Time (s) The graph above shows the activity of a radon source as a function of tim
Activity 1 oL 0 0 500 400 100 300 200 Time (s) The graph above shows the activity of a radon source as a function of time. Which one of the following is nearest to the half - life, t1/2? 100 s. O 120 s 50 s. O 250 s. O 80 s.
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