The disintegrationn rate of a certain radioactive sample at any instant is 4750 dpm which becomes 2700 dpm 5 min later. Calculate the half life to sample?

The disntergration rate of a certain radioactive sample at any instant is 4750 dp m . Five minute later, the rate becomes 2700 dp m Calculate half-line of sample.

The disintegration rate of a certain radioactive sample at any instant is 4750 disintegrations per minute. Five minutes later the rate becomes 2700 per minute. Calculate (a) decay constant and (b) half-life of the sample

The rate of disintegration of a certain radioactive sample at any instant is 8100 dpm. Fifty minutes later the rate becomes 2700 dpm. The half of the radioactive sample will be (Take log2=0.3, log3=0.5, log5=0.7 )

A radioactive sample’s activity drops to its one-third value in 80 minutes. Calculate the half-life of the sample.

The activity of a radioactive sample falls from 600 s^(-1) to 500 s^(-1) in 40 minutes. Calculate its half-life.

Mean life of a radioactive sample is 100s . Then ,its half-life (in min) is

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.