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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.

when the light itself consists of a single color, the color of the object gets modified because the reflected light contains the color of the light and then part that is reflected.

For ex, the wall in the question would appear red if the light is only one wavelength but would appear as a combination of red and its own natural color if the light is a combination of different wavelengths.

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Q: What happens when red light is shone onto a wall?
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How can you look over a wall with a periscope?

You can look over a wall with a periscope because the tube has mirrors what are on a 45 degree angle so the light goes in the top, reflects off the top mirror, then onto the bottom mirror and then into your eyes. Don't forget: Light only travels in straight lines


What happens when light falls on mirror?

It is reflected. Depending on the shape of the mirror, this can be at a variety of angles. Assuming the question refers to a flat mirror that is hung on a wall; a plane (flat) mirror has an imaginary straight line at a right-angle to it, called the normal. A ray of light hits the mirror at an angle to the normal, but is reflected at the same angle that it hits the mirror in the opposite direction. So if a ray hits the mirror at 45 degrees from the normal, it will be reflected at 45 degrees from the normal in the opposite direction.


What happens when a light ray is shone at a mirror?

It is reflected. Depending on the shape of the mirror, this can be at a variety of angles. Assuming the question refers to a flat mirror that is hung on a wall; a plane (flat) mirror has an imaginary straight line at a right-angle to it, called the normal. A ray of light hits the mirror at an angle to the normal, but is reflected at the same angle that it hits the mirror in the opposite direction. So if a ray hits the mirror at 45 degrees from the normal, it will be reflected at 45 degrees from the normal in the opposite direction.


How is a reflection of light off a white wall similar to the reflection of light off a mirror?

when light hits an object some light is absorbed and some is reflected. when it hits a mirror, almost all of that light is reflected. when it hits a white wall a lot of the light is reflected but not enough to form an image our i can detect. a wall is also not smooth so the light is reflected at billions of different angles


What happens when light hits a white surface?

By calling it a "white surface", you've already described what happens. A large fraction of the light, regardless of its wavelength, reflects from the surface, and very little of it, regardless of its wavelength, is absorbed. If any of this were appreciably different, then the surface would not be white.

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