Question

Which vector, electric or magnetic, is used to represent the polarisation of e.m. waves? How will you show that light waves are transverse in nature ?

Answer 1

Polarization is a feature that describes the geometrical orientation of oscillations in transverse waves. The direction of oscillation of a transverse wave is perpendicular to the wave's motion direction. Light waves that are polarised have vibrations that occur in a single plane. Polarization is the process of converting unpolarized light into polarised light.

Complete answer:
An electromagnetic wave's polarisation specifies the plane in which it vibrates. Because electromagnetic waves are made up of an electric and a magnetic field vibrating at right angles to each other, a polarisation convention must be used to detect the signal's polarisation. The plane of the electric field is used for this.

The direction of the electric vector determines the wave polarisation. There's also elliptical polarisation, which is made up of a mix of linear, left-, and right-polarized waves. Polarised light occurs when the plane of vibrations of an electric field is in a specific direction. It is possible to polarise unpolarized light.

When unpolarized light passes through a crystal known as a polariser, it becomes polarised. We receive zero intensity when plane polarised light passes through a polarizer with a 90 degree angle to the direction of polarisation of the light wave. This demonstrates the transverse nature of light.

Note: To reduce glare, we can utilise polarising lenses. Horizontal polarisation occurs when light reflects off horizontal surfaces such as the road, water, or snow. A vertically oriented polarising filter will reduce glare while still allowing plenty of light to pass through.A polarising filter on your camera can assist decrease glare.