In the radioactive decay of an element it is found that the count rate reduces from 1024 to 128 in 3 minutes. Its half life will be

The rate of decay of radioactive element

The radioactive decay rate of a radioactive elemant is found to be 10^(3) disintegration // second at a cartain time . If the half life of the element is one second , the dacey rate after one second ….. And after three second is ……

The radioactivity of an element was found to be one millicurie. What will be its radioactivity after 42 days if its has half life of 14 days?

A counter gives a count of 320 counts/minute for a radioactive source . After 75 minutes, the counter shows a count rate of 40 counts/minute . What is the half life period of the source ?

A counter rate meter is used ot measure the activity of radioactive sample. At a certain instant the count rate was recorded as 475 counters per minute. Five minutes later, the count rate recorded was 270 counts per minute. Calculate the decay constant and half life period of the sample.

A counter rate metre is used to measure the activity of a radioactive sample. At a certain instant, the count rate was recorded as 400 counters per minute. Five minutes later, the count recorded was 200 counts per min. Calculate the decay and half-period of the sample.

The radioactivity of a certain radioactive element drops to 1//64 of its initial value in 30 seconds. Its half-life is.

A radioactive isotope decays at such a rate that after 192 minutes only 1/16 of the original amount remains. The half life of the radioactive isotope is