Refraction of light
The bending of light in the second medium when light is transmitted from one medium to the other medium is defined as refraction of light.
Refraction is the property exhibited by the light particle when it is transmitted from one medium to another.
when the light particle passes through the second medium in points at the boundary which separates the two media and then it is transmitted into the second medium.
When the light enters into the second medium the velocity of the light is changed due to the change in density of the second medium and the bending of the light depends upon the nature of medium and hence the velocity of the light is changed.
the refraction of light is observed in two cases
case1.
when the light is transmitted from rarer medium which is having less density into the denser medium having high density, it bends towards the normal which is drawn perpendicular to the surface of the medium.
The light was traveling in the first medium striking the boundary is known as incident light and the light which parents in the second medium is known as refracted light.
In this case the angle of refraction is less than the angle of incidence the reason is the light bends towards the normal is the second medium.
case 2.
when the light is transmitted from denser medium into the rarer medium.
Light is transmitted from denser medium to rarer medium the light bends away from the normal in in the second medium.
in this case the angle of refraction is greater than the angle of incidence since the light bends away from the normal.
laws of refraction
1 the incident light reflected light and the normal all are in the same plane
2. the incident light and the reflected ray not in the same medium.
3. angle of incidence and angle of refraction not equal to each other,
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