1) Retina:
The light-sensitive layer at the back of the eye that contains photoreceptor
cells, responsible for converting light into neural signals.
2) Iris:
The colored part of the eye that controls the size of the pupil, regulating the
amount of light entering the eye.
3) Pupil:
The black circular opening in the center of the iris that allows light to enter
the eye.
4) Cornea:
The transparent outermost layer of the eye that helps focus light onto the
retina.
5) Optic
Nerve: The nerve that transmits visual information from the
retina to the brain.
6) Cones and Rods: Photoreceptor cells
in the retina; cones are responsible for color vision, while rods help with
low-light and night vision.
7) Refraction: The bending of
light as it passes through different mediums, such as the cornea and lens of
the eye.
8) Angle
of deviation (d): It is the angle between incident ray and emergent ray
9) Spectrum: The band of seven
colours formed due to dispersion of white light is called spectrum.
10) Acronym: It is a group of
alphabets that represent sequential colours in spectrum (V I B G Y O R).
11) Rainbow: It is a natural
spectrum appearing in the sky after rain showers.
12) Tyndall
effect: When light passes through a colloid its path becomes
visible. This is called Tyndall effect.
13) Prism: A transparent
optical element that disperses light into its component colors.
14) Color Blindness: A condition in
which an individual has difficulty perceiving certain colors due to a
deficiency in specific cone cells.
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