The count rate of `10 g` of radioactive material was measured at different times and times has been shown in the figure. The half-life of material and the total counts (approximately) in the first half life period, respectively are. .
The count rate for 10 g of radioactive material was measured at different times and this has been shown in the above graph with scale given. The half-life of the material and the total count in the first half-value period, respectively are.
If the pressure on a radioactive material is increased three times. Then the mean life of the element .
A radioactive material has an initial amount 16 gm After 120 days it reduces to 1 gm . Then the half-life of radioactive material is
The decay constant of a radioactive material is 5 xx 10^(-4) per year.find its half-life period.
For a certain radioactive process the graph between In R and t(sec) is obtained as shown in the figure. The the value of half life for the unknown radioactive material is approximately:
The half life period of a radioactive material is 15 minutes. What percent will remain after 45 minutes ?
The graph shows the log of activity ( log R ) of a radioactive material as a function of time t in minutes The half -life (in minutes) for the decay is closest to
The activity of a radioactive isotope is 3000 count per minute at a certai time and 2736 count per minute after 48 h later. The half-life of this isotope is
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