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What is Brewster’s law? Derive the formula for Brewster’s angle.
Concept: Polarization
What is the value of resistance for an ideal voltmeter?
Concept: Potentiometer
A solenoid of length π m and 5 cm in diameter has a winding of 1000 turns and carries a current of 5 A. Calculate the magnetic field at its centre along the radius.
Concept: Applications of Ampere’s Circuital Law > Magnetic Field of a Toroidal Solenoid
What is Magnetic intensity?
Concept: Magnetisation and Magnetic Intensity
Obtain an expression for the orbital magnetic moment of an electron rotating about the nucleus in an atom.
Concept: Origin of Magnetism in Materials
State the principle on which transformer works.
Concept: Transformers
What is electromagnetic induction?
Concept: Electromagnetic Induction
State applications of eddy currents.
Concept: Eddy Currents or Foucault Currents
An alternative voltage given by V = 140 sin 314t is connected across a pure resistor of 50 Ω. Find
- The frequency of the source.
- The rms current is through the resistor.
Concept: Different Types of AC Circuits: AC Voltage Applied to a Resistor
What is the value of resistance for an ideal voltmeter?
Concept: Potentiometer
An electron, a proton, an α-particle, and a hydrogen atom are moving with the same kinetic energy. The associated de Broglie wavelength will be longest for ______.
Concept: De Broglie Hypothesis
What is Magnetic intensity?
Concept: Magnetisation and Magnetic Intensity
State the principle on which transformer works.
Concept: Transformers
What is electromagnetic induction?
Concept: Electromagnetic Induction
Draw the circuit diagram of a half-wave rectifier. Hence explain its working.
Concept: p-n Junction Diode as a Rectifier
Write the functions of three segments of a transistor.
Concept: Junction Transistor >> Transistor as an Amplifier (Ce-configuration)
Prove the theorem of parallel axes about moment of inertia
Concept: Theorems of Perpendicular and Parallel Axes
Write the necessary equation for maximum safety, speed and state the significance of each term involved in it.
Concept: Banking of Roads
Define moment of inertia. State its SI unit and dimensions.
Concept: Angular Momentum or Moment of Linear Momentum
