The variation of decay rate with number of active nuclei is correctly shown in graph
The variation of decay rate with number of active nuclei is correctly shown in graph
D
C
A
B
Solution
By law of radioactive decay
$-\frac{\mathrm{dN}}{\mathrm{dt}} \propto \lambda \mathrm{N}$
$\mathrm{N}$ is the number of radioactive nuclei in the sample
So, $\frac{\mathrm{dN}}{\mathrm{dt}}$ can be negative
The variation of decay rate with number of active nuclei is shown by the graph.
