Forum

Dual Nature of Matter and Radiatios

State Einstein’s photoelectric equation. Explain the terms involved and discuss the significance of the work function.

Nuclei

Define binding energy of a nucleus. How does it vary with the mass number of the nucleus?

Electromagnetic Waves

List the properties of electromagnetic waves. Describe their propagation in free space.

Wave Optics

Explain the phenomenon of diffraction. What is the condition for observing diffraction of light?

Optics

• Derive the mirror formula for a concave mirror. Explain the significance of each term in the formula.

Alternating Current

What is the root mean square (RMS) value of an alternating current? How is it related to the peak value of the current?

Electromagnetic Induction

State Lenz’s law and explain how it follows from the law of conservation of energy. Give an example of its application.

Magnetic Effects of Current

Using Ampere’s circuital law, derive the expression for the magnetic field inside a long, straight current-carrying solenoid.

Current Electricity

Explain the concept of drift velocity in conductors. Derive the relation between drift velocity and current in a conductor.

Capacitance

Derive the expression for the energy stored in a parallel plate capacitor with capacitance C and potential difference V between the plates.