HSC Science कक्षा १२ - Tamil Nadu Board of Secondary Education Question Bank Solutions

Prove laws of refraction using Huygens’ principle.

What is the shape of wavefront for point source?

What is the shape of wavefront for line source?

To obtain sustained oscillation in an oscillator,

The variation of frequency of carrier wave with respect to the amplitude of the modulating signal is called ____________.

What is modulation?

Explain centre frequency or resting frequency in frequency modulation.

Explain the amplitude modulation with necessary diagrams.

List out the advantages and limitations of frequency modulation.

What is meant by coherent sources?

What is corona discharge?

Explain in detail how charges are distributed in a conductor, and the principle behind the lightning conductor.

Explain in detail the construction and working of a Van de Graaff generator.

A closed triangular box is kept in an electric field of magnitude E = 2 × 10³ N C^-1 as shown in the figure.

Calculate the electric flux through the

1. vertical rectangular surface
2. slanted surface and
3. entire surface.

What is resonance condition in cyclotron?

State Fleming’s left-Hand rule.

Is an ammeter connected in series or parallel in a circuit? Why?

Explain the concept of velocity selector.

Discuss the working of cyclotron in detail.

Derive the expression for the force between two parallel, current-carrying conductors.