Question

Write out the equation relating the activity of a radioactive sample to time, and then write out the definitions of each term

Answer 1

The activity of a radioactive sample defines the average number of disintegrations per second.

.....(1)

is the decay rate

N= No. of undecayed nuclei

with the help of above equation (1) we can get radioactive decay law.

we can also find out the half time of radioactive sample.