The fraction `f` of radioactive material that has decayed in time `t`, varies with time `t`. The correct variation id given by the curve.
.

The fraction of a radioactive material which reamins active after time t is 9//16 . The fraction which remains active after time t//2 will be .

The fraction of a radioactive material which remains active after time t is 9//16 . The fraction which remains active after time t//2 will be .

The fraction of a radioactive material which reamins active after time t is 9//16 . The fraction which remains active after time t//2 will be .

20% radioactive sample decay in time t. How much sample decay in time 2t ?

Consider a radioactive nuclide which follow decay rate given by A (t) = A_(0)2^(-(l//t_(0))), where A (f) is the fraction of radioactive material remaining after time t from the initial A_(0) at zero time. Let A_(1) be the fraction of orginal activity which remains after 120 hours. likewise A_(2) is the fraction of 200 hours. If (A_(1))/(A_(2))= 1.6, then the half-life (t_(0)) will be

The half life of radioactive substance is T. Then the fraction of the substance that has decayed in time t is-

The half life of radioactive substance is T. Then the fraction of the substance that has decayed in time t is-

If T is the half-life of a radioactive material, then the fraction that would remain after a time (T)/(2) is

If T is the half-life of a radioactive material, then the fraction that would remain after a time (T)/(2) is