Is light an electromagnetic wave?If yes then tell me why it undergoes TIR.If no then what it is?
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Yes, light is an electromagnetic wave.
When light travels from one medium to another it changes speed and is refracted. If the light rays are travelling for a less dense material to a dense medium they are refracted towards the normal and if they are travelling from a dense to less dense medium they are refracted away from the normal.
For total internal reflection(TIR) to occur the light must travel from a dense medium to a less dense medium (e.g. glass to air or water to air).
This is all fulfilled by light so, it undergoes total internal reflection (TIR) .
I hope this will help you out.
When light travels from one medium to another it changes speed and is refracted. If the light rays are travelling for a less dense material to a dense medium they are refracted towards the normal and if they are travelling from a dense to less dense medium they are refracted away from the normal.
For total internal reflection(TIR) to occur the light must travel from a dense medium to a less dense medium (e.g. glass to air or water to air).
This is all fulfilled by light so, it undergoes total internal reflection (TIR) .
I hope this will help you out.
Sathiyan:
You know electromagnetic wave can travel in any medium without any reflection then why light does undergo TIR?But does all other EM waves also undergoTIR?
The total internal reflection can take place only if the wave travels from denser to rarer medium. This is why it undergoes at TIR (total internal reflection).
All other electronic magnetic waves may undergo total internal reflection if the wave travels from denser to rarer medium.
Oh well thank you.
No worries :)
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Answer:
the light must be travelling from a more dense medium into a less dense medium (ie glass to air) the angle of incidence must be greater than the critical angle.
Each section of the electromagnetic (EM) spectrum has characteristic energy levels, wavelengths, and frequencies associated with its photons. Gamma rays have the highest energies, the shortest wavelengths, and the highest frequencies.
Total internal reflection (TIR) is the phenomenon that involves the reflection of all the incident light off the boundary. TIR only takes place when both of the following two conditions are met: the light is in the more dense medium and approaching the less dense medium.
Hope it helps
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