Ncert Exercises & Solutions

The activity R of an unknown radioactive nuclide is measured at hourly intervals. The result found are tabulated as follows:

t(h)	0	1	2	3	4
R(MB_q)	100	35.36	12.51	4.42	1.56

(i) Plot the graph of R versus t and calculate half-life from the graph.

(ii) Plot the graph of $\ln (\frac{R}{R_{0}})$ versus t and obtain the value of half-life from the graph.