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At time t=0, some radioactive gas is inj...

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`?

A

B

C

D

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The correct Answer is:
C
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