Explore Related Concepts

Difference between Real Image and Virtual Image

A mirror can form two types of images. These are namely real image and virtual image. Let us understand the basic difference between these two types of images. Let us suppose that the object serves as a point object. All the light rays are coming from a single point of the object. These light rays hit a single point on the mirror surface. The result is production of a real image of that object on the screen or any other detector. The more intense the rays coming from the object are, the higher is the intensity of the image on the screen.

On the other hand, if the light rays that arrive to our eyes appear to come from a real object but they are in fact not coming from the real object, a virtual image is formed. It commonly happens when light rays from an object hit a plane mirror and are reflected. The resultant reflected rays appear to come from that object but the apparent position of the object is not real. It seems to be present behind the mirror but it is actually present in front of the mirror.

The process of image formation follows the law of reflection. According to this law, the angle formed by incident light rays is equals to the angle of reflection. Let us understand the formation of real and virtual images. Let us assume that light rays coming from the object are being refracted. The pattern of refraction is in such a way that the refracted rays come together at a point on the image. For the purpose, the distance between object and lens should be greater than the focal length of the mirror. The converging lens forms a real image. These lenses are also known as convex lenses.

Let us assume that the light rays are coming from an object. These rays hit a point on the mirror and are refracted. The refraction pattern results in divergence of the refracted rays. If we track these rays in a straight line, they appear to be coming from the same lens surface as if this is the source not the refraction surface. The image is the virtual image. A virtual image is formed when the distance between the object and lens is far less than the focal length of the lens. The concave lenses are the diverging lenses and from a virtual image.

A real image can be seen on the screen while a virtual image cannot be seen at a screen. The reason is that there are no light rays coming at the focus of the virtual image which is a prerequisite to see an image on the screen. Both real and virtual images can be seen with our eyes. This is due to the fact that the eye lens forms a real image on our retina irrespective of the source of the light rays.  The real image is always inverted while a virtual image is erect.

Best Results From Yahoo Answers Youtube

From Yahoo Answers

Question:what is the defintion of an image Are there any other types of images

Answers:-in a real image the rays actually meet at the focus after reflection -in a virtual image the rays appear to meet at the focus after undergoing reflection -a real image cannot be obtained on a screen -a virtual image can be obtained on a screen.. -a real image is always inverted.. -a virtual image is always erect.. IMAGE: when a number of rays starting from a point after reflection or refraction meet at another point then the second point is called the image of the first point


Answers:A virtual image you can only see through the lens, a real image you can see from anywhere. Example: when you look through your glasses, they create a virtual image of the same object, only closer, and you can't see it without the glasses. When you use a magnifying glass to focus the light from the sun on the ground, you can see the spot of light (the image) even if you look straight at it, not through the glass.

Question:What is the difference between a real and a virtual image? Under what circumstances a concave mirror and a convex mirror can produce a virtual image? Under what circumstances can a convergent lens and a divergent lens produce a virtual image?

Answers:This is a difficult subject. Ill see if I can clarify The image is not always produced on the opposite side of the device such as a lens or reflecting surface. there are two areas the image plane is considered on the opposite side of the device from the source of the image. So say we have an object infront of a mirror ................| O.........|..........Image ................| you see that the image is produced on what appears to be the opposite side of the mirror in the image plane therefore it is A REAL IMAGE image produced in the image plane is real, i think the other criteria is that the object has to be on the opposite side of the plane in the real plane area Say we had some other surface Im not quite sure what shape will just draw flat but it would be another shape. .....Image........ .......................| .......................| ........O............| .......................| the image is on the same side as the object in the real plane so this is called a VIRTUAL IMAGE. the funny thing about a virtual image is I think it can still be magnified by other devices such as lenses I hope that helps clarify things a little bit and give you a place to start looking at why they are called virtual or real images

Question:Could someone please explain to me the difference between the two? I know that virtual image is "behind" or "inside" the mirror and cant be captured on a screen but real images can? (I have trouble understanding the formation of real images). Thanks so much to anyone who can clear my confusion.

Answers:if a suitable detector is placed at the real image point, an in-focus picture would result. Say your eye, or a piece of film or a digital ccd, all would capture the image at that point. It is real. Unless your name is Alice and you're chasing rabbits it might be hard to do the same thing "inside" or "behind" a mirror. Hence, it is virtual (not real, not available). But if you do figure out how to put a suitable detector there, let me know. I believe it is the solution to FTL travel (not to mention the portal to Faerie). We could make billion$

From Youtube

Virtual and real image :

Real - Virtual Image :