the rate of decay of a radioactive substances is calculated by:\na the time taken for half the material to…
the rate of decay of a radioactive substances is calculated by:\na the time taken for half the material to decay\nb the total time taken for complete removal of radioactivity\nc the number of rays emitted in one hour\nd none of the above
Answer
Brief Explanations:
The rate of decay of a radioactive substance is measured by its half - life, which is the time taken for half the material to decay. The total time for complete removal of radioactivity is not a standard way to calculate decay rate as radioactive decay is an exponential process and never truly reaches zero. The number of rays emitted in one hour is related to the activity of the source but not the decay rate in the fundamental sense.
Answer:
A. The time taken for half the material to decay