A point source emitting alpha particles is placed at a distance of 1 m from a counter which records any alpha particle falling on its 1 cm^(2)window. If the source contains 6.0 xx 10^(16)active nuclei and the counter records a rate of 50000 counts/second, find the decay constant. Assume that the source emits alpha particles uniformly in all directions and the alpha particles fall nearly normally on the window

A point source emitting alpha particles is placed at a distance of 1 m

1.	A point source emitting alpha particles is placed at a distance of 1 m from a counter which records any alpha particle falling on its 1 cm^(2)window. If the source contains 6.0 xx 10^(16)active nuclei and the counter records a rate of 50000 counts/second, find the decay constant. Assume that the source emits alpha particles uniformly in all directions and the alpha particles fall nearly normally on the window
Answer» ANSWER :`1.05 xx10^(-7)s^(-1)`

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