The rate of disintegration of a radioactive sample can be increased by :-

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 )

The rate of disintegration of a radioactive substance is …………………………… to the number of atoms present at that time .

The rate of disintegration of a radioactive substance is …………………………… to the number of atoms present at that time .