The half life of a radioactive substance is `20` minutes . The approximate time interval `(t_(1) - t_(2))` between the time `t_(2)` when `(2)/(3)` of it had decayed and time t_(1)` when `(1)/(3)` of it had decay is

The half life of a radioactive substance is 20 minutes . The approximate time interval (t_(2) - t_(1)) between the time t_(2) when (2)/(3) of it had decayed and time t_(1) when (1)/(3) of it had decay is

The half life of a radioactive substance is 20 minutes . The approximate time interval (t_(2) - t_(1)) between the time t_(2) when (2)/(3) of it had decayed and time t_(1) when (1)/(3) of it had decay is

The half-life of a radioactive substance is 20 min. The approximate time interval (t_2 – t_1) between the time t_2 when 2/3 of it had decayed and time t_1 when

Half-life of a radioactive substance is 20 min. The approximate time interval (t_2-t_1) between the time t_2 when 2/3 of it had decayed and time t_1 when 1/3 of it had decayed is

The half-life of a radioactive substance is 20 min. The approximate time interval (t_2-t_1) between the time t_2 when 2/3 rd of its has decayed and time t_1 when 1/3 rd of it had decayed is - (A) 14 min (B) 20 min (C) 28 min (D) 7 min

The half life of a radioactive substance is 24 days. What is the time interval (t_2-t_1) between the time t_2 " when " 2/3 of the original material had decayed and time t_1 " when " 1/3 of its original material has decayed ?

The half-life of a radioactive nucleus is 50 days. The time interval (t_2 -t_1) between the time t_2 when (2)/(3) of it has decayed and the time t_1 when (1)/(3) of it had decayed is

The half-life of a radioactive nucleus is 50 days. The time interval (t_2 -t_1) between the time t_2 when (2)/(3) of it has decayed and the time t_1 when (1)/(3) of it had decayed is