Q. A radioactive sample has initial concentration of nuclei :

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A

The number of undecayed nuclei present in the sample decays exponentially with time

B

The activity (R) of the sample at any instant is directly proportional to the number of undecayed nuclei present in the sample at that time

C

The number of decayed nuclei grows linearly with time

D

The number of decayed nuclei grows exponentially with time

Solution:

According to the decay equation we have hence option (A) and (D) are correct and according to radioactive decay law option (B) is correct.

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