defin the following.(I) incident rey (ii) reflected rey (iii) blind spot (iv) cataract (v) angle of incidence
Answers
Answer:
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Explanation:
Incident ray - the ray of light falling on the surface AB is called the incident ray.
Reflected ray - the incident ray bouncing back in the same medium after striking the reflecting surface is called reflected ray.
Blind spot, small portion of the visual field of each eye that corresponds to the position of the optic disk (also known as the optic nerve head) within the retina. There are no photoreceptors (i.e., rods or cones) in the optic disk, and, therefore, there is no image detection in this area.
A cataract is a clouding of the normally clear lens of your eye.
the angle of incidence is the angle between a ray incident on a surface and the line perpendicular to the surface at the point of incidence, called the normal.