Light and Optics 8.7

Only allow the light of the same colour to pass through, light of other colours are absorbed.

• Primary colour filters

• Secondary colour filters

Which of the following is NOT a primary color of light?

• Red

• Blue

• Yellow

• Green

White light is shined through a magenta filter. Which of the following will be BLOCKED by the filter? (choose all that apply)

• Red

• Blue

• Green

• Magenta

A white light is shined through a cyan filter, and then a magenta filter. What color will appear?

• blue

• green

• red

• black

A white light is shined through a cyan filter, and then a yellow filter. What color will appear?

• blue

• green

• red

• black

A white light shined through a red filter is shined toward a blank space. If a green light is also shined on that space, what color will result?

• yellow

• magenta

• cyan

• red

• green

How does light behave when hitting this shirt?

• Yellow is absorbed; all other colors are reflected.

• Yellow is reflected; all other colors are absorbed.

• All colors are absorbed, but yellow is refracted.

• Yellow is scattered and all other colors are absorbed.

Which color will transmit through the filter?

• Red only

• Blue and Violet

• Green

• All colors

Which pair of colours do NOT combine to make the correct secondary colours?

• Red + Blue = Magenta

• Red + Green = Yellow

• Blue + Green = Cyan

• Red + Yellow = Green

Why does this the t-shirt appear red and the shorts appear blue? Choose the correct statements.

• The t-shirt reflects red light.

• The t-shirt reflects blue light

• The shorts absorb yellow light

• The shorts reflect blue light

• Other colours are absorbed