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Real vs virtual image9/16/2023 The virtual image is the image that appears at the point where light coming from the object seems to converge after refraction or reflection. The real image is the image that appears at the point where light coming from the object actually converges after refraction or reflection. Click to see a hint.ADVERTISEMENT Comparison Chart Real Image An image of the pig protrudes through the hole.Įxplain how the upright image of the pig is formed. A second concave mirror, with a hole in the middle is placed over the first concave mirror. A small plastic pig is placed upright on the concave mirror resting on the table. ![]() With this in mind have a look at the pig illusion below and see if you can work out how it is achieved.ħ) The illusion of the pig is formed with two concave mirrors. All rays of light that are parallel to the normal are reflected into the focal point. Describe the imageĪll light that comes from the focal point of a mirror is reflected out as parallel rays. Describe the imageĦ) Draw the image of the object on the left. ![]() Describe the imageĥ) Draw the image of the object on the left. Trace the reflected line back behind the mirror.įinally, draw the upright image where the two lines meet behind the mirrorġ) Can the image formed by a convex mirror ever be magnified?Ģ) What happens to the image of an object that is moving away from a convex mirror?ģ) What is the size of the image when the object is right up against a convex mirror?Ĥ) Draw the image of the object on the left. Next, draw a line that is reflected from the middle of the mirror where it intersects the normal. It is reflected from the mirror as if it originated from the focal point.Connect the reflected line to the focal point. To trace an image formed by a convex mirror trace out two rays.įirst trace a ray that travels from the object to the mirror parallel to the normal. Images appear to come from inside the mirror. When the object is inside the focal length where does the image appear, in front or behind the mirror?Ĭonvex lenses produce virtual images. Notice what happens when the object is close to the mirror so that it is inside the focal length. Use a concave mirror and answer the questions below. Lets see what happens to the image formed by a concave mirror as the object gets closer to the mirror. The third is reflected off the mirror at the centre.įor simplicity we only use two lines to trace out the image. The second line travels through the focal point and then horizontal away from the mirror. One line travels horizontal to the mirror and then through the focal point. We can trace the image of a concave mirror by drawing 3 lines that originate from a point on the object and travel to the mirror, as shown on the right. It is difficult to tell which is the image and which is the real hand.Ĭontent on this page requires a newer version of Adobe Flash Player. As shown by the hand shaking illusion on the right. Notice how the image is upright.Ĭoncave mirrors are particularly good at creating impressive illusions. There is no image behind the mirror, however the light reflected from the mirror looks like it is originating from somewhere inside the mirror. Once again, just like a flat mirror, this is an illusion. You may have seen them on the side of the road or at an intersection. This is an illusion.Ī convex mirror also forms a virtual image. However the light forming the image does not come from behind the glass mirror where the image appears to be. We see the image in the mirror as being right way up. Another difference between a real image and a virtual image is that real images are inverted and virtual images are right way up.Ī flat mirror for example creates a virtual image. With a virtual image light appears to be coming from the image, but in actual fact it does not originate from the image that we see. With a real image light actually passes throught he image to form it. Mirrors and lenses reflect and refract (bend) light to create an image. ![]() Magic of science - virtual and real images
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