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How do you look in a concave mirror

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A mirror is a reflective surface that does not allow the passage of light and instead bounces it off, thus producing an image. The most common mirrors are flat and called plane mirrors. These mirrors are made by putting a thin layer of silver nitrate or aluminium behind a flat piece of glass. When you place an object in front of a mirror, you see an image of the same object in the mirror. The object is the source of the incident rays, and the image is formed by the reflected rays.

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SEE VIDEO BY TOPIC: Concave and Convex Mirrors

Image Characteristics for Concave Mirrors

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A mirror is a reflective surface that does not allow the passage of light and instead bounces it off, thus producing an image. The most common mirrors are flat and called plane mirrors. These mirrors are made by putting a thin layer of silver nitrate or aluminium behind a flat piece of glass. When you place an object in front of a mirror, you see an image of the same object in the mirror. The object is the source of the incident rays, and the image is formed by the reflected rays.

An image formed by reflection may be real or virtual. You are fooled into seeing an image! A virtual image is right side up upright. In flat, or plane mirrors, the image is a virtual image, and is the same distance behind the mirror as the object is in front of the mirror.

The image is also the same size as the object. These images are also parity inverted, which means they have a left-right inversion. The way that we can predict how a reflection will look is by drawing a ray diagram. These diagrams can be used to find the position and size of the image and whether that image is real or virtual.

These are the steps you follow to draw a ray diagram:. The angle in which a light ray hits the mirror is the same angle in which it will be reflected back. If, for example, a light ray leaves the top of an object travelling parallel to the principal axis, it will hit the mirror at a 0 degree angle, and be reflected back at 0 degrees. When this happens, we say the ray hit the mirror normally. If the light ray hit the object at a 30 degree angle, it will be reflected back at a 30 degree angle.

A mirror is a reflective surface that light does not pass through, made by a layer of silver nitrate or aluminium behind piece of glass. A mirror is a reflective surface that light does not pass through, but bounces off of and this produces an image.

Mirrors are made by putting a thin layer of silver nitrate or aluminium behind a flat piece of glass. When you place an object in front of a mirror, you see the same object in the mirror.

This image that appears to be behind the mirror is called the image. A real image occurs when light rays actually intersect at the image, and is inverted, or upside down.

A virtual image occurs when light rays do not actually meet at the image. This section will cover spherical mirrors. Spherical mirrors can be either concave or convex. The center of curvature is the point at the center of the sphere and describes how big the sphere is.

These concepts are shown in. Spherical Mirrors : This figure shows the difference between a concave and convex mirror. In a concave mirror, the principal axis is a line that is perpendicular to the center of the mirror. The easiest way to visualize what a image will look like in this type of mirror is a ray diagram. Before that can be done, the focal point must first be defined.

This point is half way between the mirror and the center of curvature on the principal axis. The distance to the focal point from the mirror is called the focal length. We can see from the figure that this focal length is also equal to half of the radius of the curvature. Concave Ray Diagram : This is a ray diagram of a concave mirror. The steps taken to draw are the same as those in a plane mirror.

In convex mirrors, the principal axis is the same as in a plane or concave mirror, perpendicular to the center of the mirror. In this case, the focal point is behind the mirror. A convex mirror has a negative focal length because of this. The focal point is the same distance from the mirror as in a concave mirror. This is shown in. Convex Mirror Ray Diagram : A convex mirror with three rays drawn to locate the image. Each incident ray is reflected according to the Law of Reflection.

The reflected rays diverge. If the reflected rays are extended behind the mirror, then their intersection gives the location of the image behind the mirror. For a convex mirror, the image is virtual and upright. Privacy Policy. Skip to main content. Geometric Optics. Search for:. Image Reflection by a Plane Mirror A mirror is a reflective surface that bounces off light, thus producing a real or virtual image.

Learning Objectives Describe interaction of the light with a mirror surface. Key Takeaways Key Points Reflected images can be either real or virtual. In a plane mirror, the images are virtual. The virtual images in a plane mirror have a left-right inversion. Drawing a ray diagram is a way to predict what a reflected image will look like. Key Terms virtual image : A virtual image occurs when light rays do not actually meet at the image. Image Formation by Spherical Mirrors: Reflection and Sign Conventions A mirror is a reflective surface that light does not pass through, made by a layer of silver nitrate or aluminium behind piece of glass.

Learning Objectives Distinguish properties of the concave and the convex mirrors. Key Takeaways Key Points Images in mirrors can be either real or virtual. A summary of the properties of the concave mirrors are shown below: converging real image inverted image in front of mirror. A summary of the properties of the convex mirrors are shown below: diverging virtual image upright image behind mirror.

Key Terms concave : curved like the inner surface of a sphere or bowl convex : curved or bowed outward like the outside of a bowl or sphere or circle. Licenses and Attributions. CC licensed content, Shared previously.

Curved mirror

Follow-up on this answer. Related Questions. Still Curious? Hi Pamela, You're probably familiar with a flat mirror, the most common household type of mirror. You see one of these every time you look into your bathroom mirror, or any time you notice your reflection in a window.

Check out Figure 1 and the description of each part that follows. Centre C The centre shown in the diagram is where the centre of the sphere would be. Like a regular circle, the distance from the centre to the surface of the mirror is the radius.

Practical Activity for The concave mirror should be as large as possible and preferably have an aluminized front surface. Suitably sized mirrors are obtainable from the supplier: Ocean Direct. For the additional effect with a lamp, the aperture diameter across the mirror's face should be at least as big as the mirror's radius of curvature.

Concave and Convex Mirrors

The graphical method of locating the image produced by a concave mirror consists of drawing light-rays emanating from key points on the object, and finding where these rays are brought to a focus by the mirror. This task can be accomplished using just four simple rules: An incident ray which is parallel to the principal axis is reflected through the focus of the mirror. An incident ray which passes through the focus of the mirror is reflected parallel to the principal axis. An incident ray which passes through the centre of curvature of the mirror is reflected back along its own path since it is normally incident on the mirror. An incident ray which strikes the mirror at its vertex is reflected such that its angle of incidence with respect to the principal axis is equal to its angle of reflection. The validity of these rules in the paraxial approximation is fairly self-evident. Consider an object which is placed a distance from a concave spherical mirror, as shown in Fig. For the sake of definiteness, let us suppose that the object distance is greater than the focal length of the mirror. Each point on the object is assumed to radiate light-rays in all directions.

Simple Uses of Concave Mirrors

Concave and Convex Mirrors. Ray Diagram for Convex and Concave Mirror. A mirror is a part of a smooth and highly polished reflecting surface. Most commonly used mirrors are plane mirrors.

Have you ever looked into a shiny metal spoon and seen your own reflection?

Light does not bend. A most significant property of light is that it travels in a straight line from its source to whatever surface it touches. The rays of light may be long or short; regardless, rays of light are always straight. A concave mirror is composed of a reflective surface with its sides curved closer in distance to your eye than its middle surface.

Definition of Concave Mirror

Introduction Have you ever visited a house of mirrors and seen a wacky-looking version of yourself? In this activity you can construct your own miniature house of mirrors. Try it out and see what funny reflections you can make! Background We see an object when light reflected from the object shines into our eyes.

Previously in Lesson 3, ray diagrams were constructed in order to determine the general location, size, orientation, and type of image formed by concave mirrors. Perhaps you noticed that there is a definite relationship between the image characteristics and the location where an object is placed in front of a concave mirror. We wish to describe the characteristics of the image for any given object location. The best means of summarizing this relationship between object location and image characteristics is to divide the possible object locations into five general areas or points:. Case 1: The object is located beyond C. When the object is located at a location beyond the center of curvature, the image will always be located somewhere in between the center of curvature and the focal point.

Distorted Images

Concave mirrors are mirrors that curve inward. Used to focus light, they reflect it inward toward one focal point. Concave mirrors show different types of images, depending on the distance between the mirror and the object reflected. Concave mirrors are used quite frequently in day-to-day life. Concave mirrors are often used as shaving mirrors and makeup mirrors. Objects held close are reflected in a concave mirror as a magnified image.

The first kind we will be looking at is a concave mirror, which would mean that you made the inside of the ball shiny. Then we will look at convex mirrors, where.

A curved mirror is a mirror with a curved reflecting surface. The surface may be either convex bulging outward or concave recessed inward. Most curved mirrors have surfaces that are shaped like part of a sphere , but other shapes are sometimes used in optical devices. The most common non-spherical type are parabolic reflectors , found in optical devices such as reflecting telescopes that need to image distant objects, since spherical mirror systems, like spherical lenses , suffer from spherical aberration.

Concave and Convex Mirrors

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