The difference between a spectral color and a non-spectral color is that A spect

Question

The difference between a spectral color and a non-spectral color is that

A spectral color is produced by a gas, while a non-spectral color comes from a blackbody

Spectral color is limited to wavelengths short of red

A spectral color comes from light at a specific wavelength, while non-spectral color can come from a combination of light at a bunch of different wavelengths

Spectral color can only be produced directly by emitting sources, while non-spectral color can only be produced by reflecting white light off surfaces

Suppose I stare at a yellow screen with green writing on it for a very long time. I then look away, toward a white,

featureless wall. What will I likely see?

A black afterimage of the writing on the screen, and nothing else

A blue afterimage of the screen, and an afterimage of the writing that looks magenta

A magenta afterimage of the screen, and an afterimage of the writing that looks blue

Nothing at all

A white beam

is very bright

is completely saturated

is completely unsaturated

is very dim

Just before the Battle of Midway in World War II, the U.S. submarine Trigger ran aground on a reef. The officers were wearing red goggles, so the bright lights inside the submarine wouldn't interfere with their ability to see in the dark ocean. On their maps, the reefs were marked in red. Why did they run aground?

Because the whole map would have looked dark

Because with the red filters on their goggles, the reefs would have looked the same color as the rest of the map, making it hard to identify them

Because with the red filters on their goggles, the afterimages of the reefs on the maps would have interfered with their view of the ocean floor

Because the goggles would have blocked their peripheral vision

Our eyes are sensitive to 3 main properties of light. These are:

Hue, saturation and lightness

Hue, graininess and lightness

hotness, coldness and brightness

greyness, lightness and saturation

A spectral color is produced by a gas, while a non-spectral color comes from a blackbody

Spectral color is limited to wavelengths short of red

A spectral color comes from light at a specific wavelength, while non-spectral color can come from a combination of light at a bunch of different wavelengths

Spectral color can only be produced directly by emitting sources, while non-spectral color can only be produced by reflecting white light off surfaces

Explanation / Answer

Spectral Colour is uni wavelngth and non spectral is combination of Wavelength
so option C suit best

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2 due to interferecne effects we get reulst appears blue

so C. A magenta afterimage of the screen, and an afterimage of the writing that looks blue

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-3. option B, is completely saturated

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4. B Because with the red filters on their goggles, the reefs would have looked the same color as the rest of the map, making it hard to identify them

so option B it is

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5. A.  
Hue, saturation and lightness

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