# Question: Why Does A Red Object Look Black In Blue Light?

## What color would a red apple appear to be if you shine a blue light on it?

Under blue light, an apple will appear black because it absorbs the blue light and has no red light to reflect.

In contrast, if magenta light is shined on the apple, it will appear red because magenta light is comprised of red and blue light.

The blue light will still be absorbed, but the red will be reflected..

## When a pure blue object is illuminated with red light the object appears?

For example, a pure blue object illuminated with pure red light will appear black, because it absorbs all the red light falling on it. But, the true color of the object is blue, which is independent of illumination. Figure 2.

## Why does an object appear black?

A black coat appears black because it absorbs all the wavelengths of visual light that fall on it and no light is reflected into the eye from that object. It is because of this that black clothes become hotter on a sunny day that white ones.

## Why does a green shirt look black in red light?

Objects also appear black in any single colour of light if their colour is not the same as the light. For example, a green object appears black in any other light than green (or white which contains green) because there is no green light shining on it to reflect into your eyes.

## What happens when you shine a red light on a blue object?

3 Answers. So shining red light on a blue object would, in an ideal world, show it as black. In the real world no object is perfectly blue, it will reflect some light outside the blue.

## What happens when you shine a red light on a red object?

What happens when red light shines on a red ball? It continues to reflect the red light, and so it is still red — but a white ball would also look red in red light, because it reflects all colors. If instead we shine blue light on a red ball, it will look dark, because it does not reflect blue light.

## What happens when red light hits a green object?

A red ball reflects red color and absorbs the rest colors.So,if I throw green light on a red ball the ball will absorb that green light. Now,will the part on which the light falls must appear black as it absorbs all the light and reflects no light.

## Why does black look green?

No. Black is an absence of light, so it has no colour. However, when an area of black is printed onto paper, in order to create an absence of light, it has to absorb all visible wavelengths. In practice it can only approximate this.

## How will Red Rose appear in green light?

Objects appear a certain colour because only certain colour’s of light are reflected of by them. Similarly a red rose reflect red light of its surface making it red. When a red rose is seen in green light, it absorbs the green light and the petals appear black as no light is reflected by the rose.

## What color will a blue object appear under a red light?

A very good blue object reflects only blue light, no red light, therefore it looks black. A very good blue object reflects only blue light, no yellow light, therefore it looks black. A yellow object reflects both red and green light, that is why we see yellow.