Our brain mixes the colors by
The color that is not part of the spectrum is
When light enters a denser medium, it bends
Objects that let some light to pass through are known as
When light enters water from air, its speed decreases to
The lenses work due to the
Diverging means to
An example of luminous objects is
When light travels through a transparent object, it
The critical angle is basically the
For long-sightedness, the lenses that are used, are
Converging means to
A color filter removes
Light travels in
An example of object that uses concave lenses, is
The lens in our eye can change its thickness due to
The number of cone cells in an eye is
We can see things because they
We see different colors on screen because dots change their
If a ray of light enters the surface of diamond at an angle of 24 Degree or more, the light would
The higher the "refractive index"
A line drawn at right angle to the plane is known as
In optical fiber, the data is transferred in form of
The number of the most common shapes of lenses are
The use of total internal 'reflection' of light is to
The critical angle for glass is
Yellow lights stimulate
Each ray of light is
Unlike sound, light depends on
Sunlight travels through a complete empty space known as
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