1.The activity of a sample of radioactive material is A1A_1A1 at time t1t_1t1 and A2A_2A2 at time t2t_2t2 (t2>t1t_2 > t_1t2>t1). Its mean life is TTT. Thena.A1t1=A2t2A_1 t_1 = A_2 t_2A1t1=A2t2b.A1−A2=constantA_1 - A_2 = \text{constant}A1−A2=constantc.A2=A1e(t1−t2)/TA_2 = A_1 e^{(t_1 - t_2)/T}A2=A1e(t1−t2)/Td.A2=A1e−(t2−t1)/TA_2 = A_1 e^{-(t_2 - t_1)/T}A2=A1e−(t2−t1)/TLogin to continueOnly logged in users canattempt or see the solution.
