The half –life of a radioactive substance is 30 s. Calculate:
(i ) the decay constant, and
(ii) Time taken by the sample to decay 3/4 of its initial value.
(a) V' - V/V' +V
(b) V' - V/V
(c) V' - V/ V'
(d) V - V'/V'
The half –life of a radioactive substance is 30 s. Calculate:
(i ) the decay constant, and
(ii) Time taken by the sample to decay 3/4 of its initial value.