The activity of a radioactive sample is measured as $9750$ counts per minute at $t = 0$ and as $975$ counts per minute at $t = 5$ minutes. The decay constant is approximately ............ per minute
The activity of a radioactive sample is measured as $9750$ counts per minute at $t = 0$ and as $975$ counts per minute at $t = 5$ minutes. The decay constant is approximately ............ per minute
- A
$0.230$
- B
$0.461$
- C
$0.691$
- D
$0.922$
Similar Questions
A radio isotope has a half life of $75\, years$. The fraction of the atoms of this material that would decay in $150\, years$ will be...........$\%$
A radio isotope has a half life of $75\, years$. The fraction of the atoms of this material that would decay in $150\, years$ will be...........$\%$
At $t = 0$, number of active nuclei in a sample is $N_0$. How much no. of nuclei will decay in time between its first mean life and second half life?
At $t = 0$, number of active nuclei in a sample is $N_0$. How much no. of nuclei will decay in time between its first mean life and second half life?
What fraction of a radioactive material will get disintegrated in a period of two half-lives
What fraction of a radioactive material will get disintegrated in a period of two half-lives
If $t_{1/2}$ is the half life of a substance then $t_{3/4}$ is the time in which substance
If $t_{1/2}$ is the half life of a substance then $t_{3/4}$ is the time in which substance
The radioactive sources $A$ and $B$ have half lives of $2\ hr$ and $4\ hr$ espectively, initially contain the same number of radioactive atoms. At the end of $2\ hours$, their rates of distintegration are in the ratio
The radioactive sources $A$ and $B$ have half lives of $2\ hr$ and $4\ hr$ espectively, initially contain the same number of radioactive atoms. At the end of $2\ hours$, their rates of distintegration are in the ratio