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What is white light?
It is the combination 7 different colors (ROYGBIV)
True or False. Is Light a Wave?
True, It is an electromagnetic wave
What is the speed of light in vacuum?
300 000 km/s or 300 000 000 m/s
what is the phenomena of breaking of light into 7 colours called? D________n
Dispersion
When a water droplet breaks light into the 7 colours what do we see? R_____w
Rainbow
True or False. You can never
see a rainbow when the Sun is in front of you.
True
A
prism splits a ray of white light into a spectrum of colours.
This
is known as d________n.
dispersion
The
spectrum of white light is continuous. There are GAPS between the colours.
FALSE-no gaps
Red has the highest frequency among the color spectrum.
False
Violet has the highest frequency among the color spectrum.
True
True or False. Red light is refracted least because
it has the
longest wavelength.
True
True or False. Violet light is refracted the most because it has the shortest wavelength
True
What are the three primary colours?
Red, Blue, Green
What type of photreceptor that is sensitive to colours? C_____
Cones
True or False. When
you mix two primary colours you get tertiary colours.
False. Secondary colors
What are the three examples of secondar colors?
cyan, yellow, and magenta
