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

Show that the total energy is conserved during LC oscillations.

Prove that energy is conserved during electromagnetic induction.

In a series LC circuit, the voltages across L and C are 180° out of phase. Is it correct? Explain.

Two point white dots are 1 mm apart on a black paper. They are viewed by eye of pupil diameter 3 mm approximately. The maximum distance at which these dots can be resolved by the eye is, [take wavelength of light, λ = 500 nm]

State the laws of reflection.

State the law of refraction.

Prove laws of reflection using Huygens’ principle.

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.