ACC.to laws of reflection.
angle of incident is equal to angle of reflection....
The direction of the reflected ray is determined by the angle the incident ray makes with the surface normal, a line perpendicular to the surface at the point where the ray hits. The incident and reflected rays and the normal lie in a single plane, and the angle between the reflected ray and the surface normal is the same as that between the incident ray and the normal. This is known as the Law of Reflection.
angle of incident is equal to angle of reflection....
The direction of the reflected ray is determined by the angle the incident ray makes with the surface normal, a line perpendicular to the surface at the point where the ray hits. The incident and reflected rays and the normal lie in a single plane, and the angle between the reflected ray and the surface normal is the same as that between the incident ray and the normal. This is known as the Law of Reflection.
- The law of reflection says that the reflected ray lies in the plane of incidence, and the angle of reflection equals the angle of incidence.
- The law of refraction says that the refracted ray lies in the plane of incidence, and the sine of the angle of refraction divided by the sine of the angle of incidence is a constant.
where n is a constant for any two materials and a given colour of light. It is known as the refractive index.
its the geometry of law of reflection( 1st half) and law of refraction(2nd half)..........
Refraction occurs when light travels through an area of space that has a changing index of refraction; this principle allows for lenses and the focusing of light. The simplest case of refraction occurs when there is an interface between a uniform medium with index of refraction 
and another medium with index of refraction 
. In such situations, Snell's Law describes the resulting deflection of the light ray:
and another medium with index of refraction . In such situations, Snell's Law describes the resulting deflection of the light ray:
where 
and 
are the angles between the normal (to the interface) and the incident and refracted waves, respectively. This phenomenon is also associated with a changing speed of light(towards the normal and away from the normal) as seen from the definition of index of refraction provided above which implies:
and are the angles between the normal (to the interface) and the incident and refracted waves, respectively. This phenomenon is also associated with a changing speed of light(towards the normal and away from the normal) as seen from the definition of index of refraction provided above which implies:
where 
and 
are the wave velocities through the respective media.
and are the wave velocities through the respective media.
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