Question
What is meant by radioactive equilibrium?
✓
Answer
Radioactive Equilibrium : If the activity of a radioactive substance does not change with time during the disintegration process, then this state is called radioactive equilibrium. In this condition, the net rate of disintegration of all the elements except the first and last element of the radioactive process becomes zero at some time, i.e.
$\lambda_{A} N_{A}=\lambda_{B} N_{B}=\lambda_{C} N_{C} \ldots \ldots=\text { constant. }$
This constant is also called the activity of the radioactive sample.
$\lambda_{A} N_{A}=\lambda_{B} N_{B}=\lambda_{C} N_{C} \ldots \ldots=\text { constant. }$
This constant is also called the activity of the radioactive sample.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A thin straight infinitely long conducting wire having charge density λ is enclosed by a cylindrical surface of radius r and length l, its axis coinciding with the length of the wire. Find the expression for the electric flux through the surface of the cylinder.
Obtain the expression of electric field at any point by continuous distribution of charge on a surface.
Describe, with the help of a circuit diagram, the working of a photodiode.
A ray PQ incident normally on the refracting face BA is refracting in the prism BAC made of material of refractive index 1.5. Complete the path of ray through the prism. From which face will the ray emerge? Justify your answer.
Is there any lower limit to the electric force between two particles placed at a separation of 1cm ?
Obtain a relation for equivalent capacitance of the series combination of capacitors.
Explain electricity conduction in intrinsic semi-conductors.
Write Snell's law and derive its general equation.
The graph shown here shows the variation of total energy (E) stored in a capacitor against the value of the capacitance (C) itself. Which of the two: the charge on capacitor or the potential used to charge it, is kept constant for this graph?
A solenoid of length $0.5 m$ has a radius of $1 cm$ and is made up of 500 turns. It carries a current of $5 A$. What is the magnitude of the magnetic field inside the solenoid?
→