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The critical angle is not the same thing as the angle of incidence.

There is a reason the confusion. The critical angle is defined as the smallest angle of incidence which results in total internal reflection.

Every plane wave incident on a flat surface has an angle of incidence. That can be any angle. When a wave travels from a dense medium to a less dense medium, there comes an angle of incidence where there is no transmission into the less dense medium. We say then that for an angle of incidence above the "critical angle" the result is total internal reflection.

It is also true that with Snell's law, the critical angle is the particular angle of incidence which would result in a 90 degree angle of refraction.

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โˆ™ 2012-12-31 05:38:06
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Q: Is the critical angle the same thing as the angle of incidence?
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Related questions

When a light ray is reflected by a mirror is the angle of the light ray and the reflected ray different or the same?

Angle of Incidence = Angle of ReflectionThis is only true if the angle of incidence is greaterthan the critical angle.


What is the size of the angle of incidence and reflection?

Angle of incidence can be anything. Angle of reflection is the same as angle of incidence.


How is the angle of incidence of light ray related to the angle of reflection?

For a smooth surface, the angle of incidence is the same as the angle of reflection.


Is the angle of reflection the same as the angle of incidence?

Yes.


What is refraction angle of incidence?

If the angle of incidence increases and the indexes of refraction stay the same, what happens to the angle of refraction?


Are every angle of incidence the same?

no


What is the best angle of incidents?

The angle of incidence is the angle of which it item is reflected, this leads us on to the fact that the angle of incidence will always be the same as the angle of reflection.


Is the angle of reflection the same like angle of incidence?

yes it is


Why is the angle of reflection and the angle of incidence the same?

nobody knows


What is the critical angle of perspex and water?

The Critical angle of perspex is 42o.It is the same as the critical angle of glass.


what are laws of reflection?

1. The angle of incidence is equal to the angle of reflection. 2. The reflected ray, the incident ray and the normal at the point of incidence lie on the same plane.


When light is reflected how are the angle of the incidence and the angle of reflection related?

The angle of incidence and the angle of reflection are related in the sense that the two angles are always the same. They are always equal.

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