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  4. A radioactive sample has an activity A in air. If the sample is kept inside water then its activity A'

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Q. A radioactive sample has an activity $A$ in air. If the sample is kept inside water then its activity $A'$_________

AP EAMCETAP EAMCET 2020

Solution:

Activity of a radioactive sample does not depend on the type of medium in which it is kept. Hence, if the radioactive sample is kept inside water, then its activity $(A)$ remains same as in air. i.e., $A'=A$