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# What would a red object look like shone onto a blue light?

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Red and blue are at opposite ends of the visible light spectrum, red being of low frequency, and blue being of high frequency. Sunlight contains frequencies across the whole frequency range, which appears white. An object that appears white reflects all frequencies.

A red object appears red because it reflects red (low frequency) light, and absorbs all other colours. Blue light contains only high frequencies. If you are in a darkened room, lit only by blue light, white objects will appear blue because they are reflecting the blue light, and no other frequency is available.

But a red object absorbs high-frequency (blue) light, and since this is the only light in the room, it does not reflect any light. Objects that do not reflect any light appear black. Some objects appear black even in sunlight, because they absorb all frequencies and do not reflect any.

So to answer the question, when you have a red object that is lit only by blue light, it will appear black.
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  red

# Why do coloured objects red green blue look coloured when white light is shone on them?

Because the white light shines on it and the white light contains all seven frequencies. However the object only reflects one frequency (which is then the colour it looks) the

  Black

# Why an red object appears black when blue light is shone on it?

  the red object absorbs the blue light and reflects none.

# What colour would a blue object look like if a yellow light were shone on it?

It's called "A Blue Object" because when light of many colors falls on it, it reflects the blue light toward your eyes and absorbs all the other colors, including yellow.

# What colour will a green object be if only blue light was shone on it?

Black, because the blue light would be absorbed into the object's pigment and as there is no green light to reflect, the object would appear black.

# What happens when white light is shone onto a coloured object?

The object reflects the colour(s) you see and absorbs the rest. This is why black objects get hotter in the sun than white objects. The white 'colour' reflects much more energ

black

# What color would a red object appear to be if you shone only green light on it?

it would appear black.

blue

# What colour would a yellow object be if only a blue light was shone on it?

Purple, Cuz aliens dont exist

black
In Science

I would be red.
In Science

# What happens when red light is shone onto a wall?

Any object that has light shone on it would appear in a particular color because the said object absorbs all the other colors of the spectrum and reflects one single color.
In Colors

# What would a blue object look like in a cyan light?

It would look cyan because the colors would be filtered.
In Science

# What would an objects colour be if it was green but you shone red light on to it?

A green object absorbs all light except green which is reflected by  the pigment. White light is made up of all colors and all except  green are absorbed; only green is refl
In Science

# What color would a red rose be if a blue light were shone on it?

If the pigment in the rose is pure red, the rose would appear  black. However, few real objects are pure primary colours, so the  likelihood is that the rose would not be co