Nuclear Physics and RadioactivityMedium
Question
At time t = 0, some radioactive gas is injected into a sealed vessel. At time T, some more of the same gas is injected into the same vessel. Which one of the following graphs best represents the variation of the logarithm of the activity A of the gas with time t ?
Options
A.
B.
C.
D.
Solution
A = A0] e−λt
ln A = ln A0 − λt
ln A versus t is a linearly decreasing graph with slope depending to λ. As λ does not change, slope remains same.
ln A = ln A0 − λt
ln A versus t is a linearly decreasing graph with slope depending to λ. As λ does not change, slope remains same.
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