Most Important Selected Qs for JEE AdvancedPhysicsNuclear Physics
In certain experiment it has been found that the ratio of the decay current in a L-R circuit to the activity of a radioactive sample remains constant with time. The time constant of L-R circuit is 3 sec , find the average life (in second) of radioactive sample.
Correct answer
3
Step-by-step solution
A = A ₀ e ^ - t and I = I ₀ e ^ - t / ; I₀ A₀ e^ (- 1 + ) t = i A for constant value of i A , - 1 =0 = 1 ; T _ mean =3 sec