What do you mean by polarisation of light ? How polarisation and impolarized light are formed ? How polarized and unpolarised light is represented ? How will you prove that light is transverse wave in nature ?
Answers
Polarization of light ⇒ In very common words, The process of transforming unpolarized light into polarized light is known as polarization of light.
In some typical words, Polarization is the property of any kind of the wave of our nature that can oscillate with more than one origin.
Any electromagnetic wave that can vibrates in more than one plane is referred to as unpolarised light.
Polarized light vibrates in one plane whereas Unpolarized light vibrates in more than one plane.
Representation of polarized and unpolarized light is shown in the given figure.
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Experiment to prove the Transverse nature of the light waves ⇒
Light always travels in such a way so as the direction of light wave is perpendicular to the direction of Propagation of the wave. This imparts the transverse nature to the light.
Experiment to demonstrate this ⇒ Polarization of the light waves proves the transverse nature of the light waves.
Light waves are passed through two crystals namely Polarizer and Analyzer.
Let us name Polarizer as A and Analyzer as B.
Now, we can say that, When crystal A and B are parallel to each other, the intensity of light entering A passes through B without any change.
But, if the orientation or origination of Analyzer changes with respect to Polarizer then the intensity of light emerging from Analyzer changes and finally it also becomes zero when the Polarizer is at right angles with respect to the Analyzer.
This Proves that the light waves is transverse in nature. If light waves will be not be traverse then there in tensity will not be zero.
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Hope it helps.
