First we should know what will be happen when the light ray goes from denser medium to rarer medium and rarer medium to denser mdeium....
1. The light refracted away from the normal (Denser to Rarer)
2. The light refracted towards the normal (Rarer to denser)
So it is not possibel to get total internal reflection whan the light travel from rarer to denser medium......
Conditions to achieve to get TIR
1. The light should travel from denser mediumt to rarer medium
2. The angle of incidence at the interface should be greater than critical angle
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Actually it is refraction process and specifically indentified as total internal reflection. The condition for total reflection is that the ray has to traverse from denser medium to the rarer medium and the angle of incidence has to be more than the critical angle.
Total internal reflection occurs when the angle of incidence with respect to the normal at the boundary to a less dense medium exceeds the critical angle.
Light must travel from the optically denser medium to the optically less dense one. For total internal reflection to occur, the angle of incidence in the optically denser medium must be greater than the critical angle of that medium. The critical angle is that angle of incidence in the optically denser medium for which the angle of refraction is 90o.
Refractive index of the medium is equated to 1/ sin C Here C is the critical angle. Diamond has high refractive index more than 2. So critical angle becomes very low. So for falling radiations at angles of incidence greater than this smaller value of critical angle, total internal reflection becomes possible.
When a wave traversing in a medium of less refractive index gets reflected at a medium of greater refractive index then wave undergoes a phase change of pi radians. But if the same reflection takes place as the wave traverses from a medium of greater refractive index to that of less refractive index, then no such phase change. The later reflection is known as total internal reflection. So as light traversing in air gets reflected at glass then phase change of pi radians occurs.
Definitely possible asmedium 2 is found rarer compared to medium 1
Actually it is refraction process and specifically indentified as total internal reflection. The condition for total reflection is that the ray has to traverse from denser medium to the rarer medium and the angle of incidence has to be more than the critical angle.
Total internal reflection occurs when the angle of incidence with respect to the normal at the boundary to a less dense medium exceeds the critical angle.
Light must travel from the optically denser medium to the optically less dense one. For total internal reflection to occur, the angle of incidence in the optically denser medium must be greater than the critical angle of that medium. The critical angle is that angle of incidence in the optically denser medium for which the angle of refraction is 90o.
it is not the angle of total reflection, it is the critical angle. and when the angle of incidence is greater than the critical angle, total internal reflection takes place and as it is necessary for total internal reflection to take place that the ray must travel from denser to rarer medium so, when it occurs, the ray is reflected bach into the denser medium.
Total internal reflection occurs when a light hits its medium at an angle wider than a certain critical angle, depending upon what's normal to that medium. If the refractive index and the incident angle on the other side are measured lower or greater, respectively, the light is totally reflected.
no. if the medium is denser, the reflection of light would not do it.
Refractive index of the medium is equated to 1/ sin C Here C is the critical angle. Diamond has high refractive index more than 2. So critical angle becomes very low. So for falling radiations at angles of incidence greater than this smaller value of critical angle, total internal reflection becomes possible.
Mirage is a good example which is seen due to refraction of light and especially due to total internal reflection. ============================ A semi-opposing opinion: No reflection is required for the creation of a mirage, only refraction. ============================= Hope you might have heard about the conditions for total internal relection to take place. 1) Ray has to traverse from denser to rarer 2) the angle of incidence is to be more than critical angle of the denser medium So in such a case the refraction phenomenon cannot take place and so all the energy to be refracted is sent back to the denser medium itself. Hence named as total internal reflection. Of course total internal reflection is totally different from ordinary reflection.
You get total internal reflection. That is, the incident beam bounces off the interface back into the medium.
When a wave traversing in a medium of less refractive index gets reflected at a medium of greater refractive index then wave undergoes a phase change of pi radians. But if the same reflection takes place as the wave traverses from a medium of greater refractive index to that of less refractive index, then no such phase change. The later reflection is known as total internal reflection. So as light traversing in air gets reflected at glass then phase change of pi radians occurs.
Any two media having different optical densities is necessary. The conditions for total internal reflection are: 1. Light must travel from the optically denser medium to the optically less dense one. 2. The angle of incidence is greater than the critical angle, which is the angle of incidence in the optically denser medium for which the angle of refraction is 90o.