Question: A radioactive sample has an activity R . For which of the following changes would the activity remain unchanged? The number of radioactive nuclei in

A radioactive sample has an activity R. For which of the following changes would the activity remain unchanged?
The number of radioactive nuclei in the sample is doubled.
The half-life of the radioactive nuclei is doubled.
The decay constant is doubled.
A time period equal to two half-lives is allowed to elapse.
All of the above changes result in a change in the activity.
A radioactive sample has an activity R . For

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