Forum

Nuclear Reactions – Mass Defect and Binding Energy

Define mass defect and binding energy. Calculate the binding energy per nucleon of a nucleus given its atomic mass.

30/10/2024

Physics

12th (Science)

X-Rays – Production and Applications

Describe how X-rays are produced in an X-ray tube. Discuss two medical applications of X-rays.

30/10/2024

Physics

12th (Science)

Photoelectric Effect – Threshold Frequency

Explain the concept of threshold frequency in the photoelectric effect and derive Einstein’s photoelectric equation.

30/10/2024

Physics

12th (Science)

Ray Optics – Refraction and Snell’s Law

State Snell’s law of refraction. A light ray travels from air into glass (refractive index = 1.5). If the angle of incidence is 30°, calculate the angle of refraction.

30/10/2024

Physics

12th (Science)

Wave Optics – Interference

Explain the concept of interference and derive the condition for constructive interference in terms of the path difference between two coherent sources.

30/10/2024

Physics

12th (Science)

Electromagnetic Waves – Speed of Light

Explain how Maxwell’s equations predict the existence of electromagnetic waves. Derive an expression for the speed of light in a vacuum using permittivity and permeability.

30/10/2024

Physics

12th (Science)

Alternating Current – Impedance in LCR Circuits

Derive the expression for the impedance of a series LCR circuit connected to an AC source and explain its dependence on frequency.

30/10/2024

Physics

12th (Science)

Electromagnetic Induction – Faraday’s Law

State Faraday’s law of electromagnetic induction and explain how it is applied in generating an induced current.

30/10/2024

Physics

12th (Science)

Force on a Moving Charge in a Magnetic Field

A proton enters a magnetic field with velocity “v” at an angle of 30° to the field direction. Derive the expression for the magnetic force acting on it.

30/10/2024

Physics

12th (Science)

Magnetic Field Due to a Current-Carrying Loop

Derive the expression for the magnetic field at the center of a circular loop carrying current.

30/10/2024

Physics

12th (Science)