# Difference Between Concave And Convex Mirrors Pdf

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We will examine here the difference between concave and convex mirrors. After that, we will get an idea about the types of mirrors, and different types of images formed by these lenses.

First, we will study all the keywords related to the mirrors so that we can learn their meanings. This will help us understand the topic better. The direction of the light gets changed when it falls on an object. The image of an object is formed in the mirror due to the property of reflection of light.

Have you ever wondered why are we able to see an object in the daylight but not in the dark night? When the light falls on an object, it gets reflected. The image of that object is perceived by the lens in our eyes. If the top and bottom parts of an object are reflected as the bottom and top parts respectively in the mirror then the image is called an inverted image.

If the top and bottom parts of an object are reflected as the top and bottom parts inside the mirror also then the image is called an erect Upright image.

If we are not able to get the image of an object on a screen then it is called a virtual image. For example, an image in the mirror can not be obtained on a screen or curtain as it is inside the mirror. So all the images formed inside a mirror are virtual images.

We are able to see our image in any shiny object like stainless steel, water, and glass due to the change of the direction of light, which is called reflection. The shiny objects which change the direction of light act as a mirror. Plain glass is converted into a mirror by painting one of the sides with reflective silver-coated paint.

For scientific mirrors, silicon nitride paint is used. The image formed in plane mirrors is virtual, same-sized, and at the same distance inside the mirror as the object is at the outside of the mirror. The image formed in the Plane mirrors is erect but laterally inverted. This means the left side of the object will appear on the right side of the image and vice-versa.

For the full image of a 6 feet tall object in a plane mirror, the length of the plane mirror should be 3 feet. Therefore, we can say that to view the complete image of an object in the mirror, the length of the plane mirror should be half of the length of the object. In short, the images formed by a plane mirror are virtual, erect, laterally inverted, same-sized, at the same distance inside the mirror. A spherical mirror is a part of the hollow sphere of glass. There are two types of spherical mirrors.

The inner side of the hollow sphere is called the concave side. So, if the outer side of the spherical mirror is coated with mirror-paint and the inner side act as the reflector, then it is called a concave mirror. The concave mirror can reflect the image on the screen. Therefore, the image obtained by a concave mirror is real.

This real image is inverted in shape. A concave mirror does not always give a real and inverted image. If the object is placed very near to the concave mirror then the image is formed inside the mirror. In this case, the image is virtual. This virtual image is erect as well as magnified. In short, the images formed by a concave mirror can be real, or virtual. This image can also be inverted or erect.

Dentists and ENT doctors use the concave mirror to view the enlarged images of the infected teeth, ear, and eye. The reflectors of the headlights of the vehicles and the torches are concave in shapes, to through the light on the wider area of the road. The outer side of the hollow sphere is called the convex side. So, if the outer side acts as the reflector and, the inner side of the spherical mirror is coated with mirror-paint then it is called a convex mirror.

In the convex mirror, the images are formed inside the mirror. Therefore, the images obtained by the convex mirrors are virtual. Also, the images obtained are erect and smaller in size. In short, the images formed by a convex mirror are virtual, erect and smaller in size. Convex mirrors are used in the vehicles as rearview mirrors to view the image of the more area of the road.

Security mirrors of the public building or at the blind corners of the road the convex mirrors are used. Welcome to Quiz — Light shadow and mirrors. Skip to content Guest Bloggers Login Register. Difference between Concave and Convex mirrors. Contents of the page. Reflection of light. Inverted Image. Observe the image below: —. Erect Image. Virtual Image. Real Image. If we are able to get an image on a screen then it is called a real image.

Meaning of a Mirror. A mirror is something in which we get a clear image of an object. Types of Mirror. There are mainly two types of mirrors. Plane Mirrors 2. Plane Mirror. As the name suggests, the plane or flat surfaces of any shiny object act as a Plane mirror. Images Formed by Plane Mirrors. The properties of the images formed by plane mirrors are as follows:- 1.

Spherical Mirror. Concave Mirror 2. Convex Mirror. Difference between Concave and Convex mirrors: Definitions. Concave Mirror. Uses of Concave Mirror. Uses of Convex Mirror. Concave Mirror Convex Mirror The outer side of the sphere is coated with the mirror-paint and the ray is reflected from the inner side of the mirror.

The inner side of the sphere is coated with the mirror-paint and the outer side works as the reflector of the ray. Real as well as a virtual image can be formed. Only the virtual image can be formed. An erect, inverted, small, as well as magnified image, can be formed. It depends upon the distance of the object from the mirror. Erect and small-sized images are formed. Take the Quiz. The quiz contains the questions related to the light, shadow and mirrors. When we say that a person has blue eyes, we actually refer to the colour of this part of the eye.

The shape of the object that would give a circular shadow if held in one way and a rectangular shadow if held in another way is Cylindrical. The images formed by a convex mirror are real, erect and smaller in size.

Two similar-sized objects are placed on the ground in the sunlight. In which case the shadows of the two objects will be different. The shadows of one thick notebook and one thin notebook placed facing their front-flat surfaces towards the sun.

The shadows of one black pen and one blue pen. The shadows of one yellow rose and one red rose. The shadows of two chairs with different sides facing towards the sun. Rahul is looking into the mirror. The image formed in the mirror is either a shadow or reflection of his face.

A pinhole camera can be used To view the brightly lit objects. To image the sun. To view the solar eclipse. To view all the options mentioned here. According to the laws of reflection, the angle of incidence is: — more than the angle of reflection.

## Difference Between Concave and Convex Mirrors

The image in a plane mirror has the same size as the object, is upright, and is the same distance behind the mirror as the object is in front of the mirror. A curved mirror, on the other hand, can form images that may be larger or smaller than the object and may form either in front of the mirror or behind it. In general, any curved surface will form an image, although some images make be so distorted as to be unrecognizable think of fun house mirrors. Because curved mirrors can create such a rich variety of images, they are used in many optical devices that find many uses. We will concentrate on spherical mirrors for the most part, because they are easier to manufacture than mirrors such as parabolic mirrors and so are more common. We can define two general types of spherical mirrors. If the reflecting surface is the outer side of the sphere, the mirror is called a convex mirror.

As the angle of incidence is increased for a ray incident on a reflecting surface, the angle between the incident and reflected rays ultimately approaches what value? The angle of incidence is the angle between the incident ray and the normal. As this angle approaches 90 degrees, the reflected ray also approaches a 90 degree angle with the normal; thus, the angle between the incident and reflected ray approach degrees. If you stand three feet in front of a plane mirror, how far away would you see yourself in the mirror? If you stand 3 feet from the mirror, then your image is three feet on the other side of the mirror; this puts your image a total of six feet from you 3 feet to the mirror plus 3 more feet to the image.

Mirror refers to any smooth polished or shining surface, that can reflect the light beam and form images. It can be of two types, i. The mirror whose reflecting surface is flat is a plane mirror whereas a mirror with the curved reflecting surface is termed as a spherical mirror. A spherical mirror is of two types, i. A convex mirror has a reflecting surface that bulges outside. The main difference between a convex and concave mirror lies in the image formed by the two mirrors, i. Basis for Comparison Convex Mirror Concave Mirror Meaning Convex mirror implies the mirror whose reflecting surface is away from the center of curvature.

Difference between concave & convex mirror is given here. Visit now to check the detailed comparison & main differences between concave.

## What is the difference between Concave and Convex mirror?

We only have to look as far as the nearest bathroom to find an example of an image formed by a mirror. Images in flat mirrors are the same size as the object and are located behind the mirror. Like lenses, mirrors can form a variety of images.

There are, again, two alternative methods of locating the image formed by a convex mirror. The first is graphical, and the second analytical. According to the graphical method, the image produced by a convex mirror can always be located by drawing a ray diagram according to four simple rules: An incident ray which is parallel to the principal axis is reflected as if it came from the virtual focus of the mirror. An incident ray which is directed towards the virtual focus of the mirror is reflected parallel to the principal axis. An incident ray which is directed towards the centre of curvature of the mirror is reflected back along its own path since it is normally incident on the mirror.

### What is the difference between Concave and Convex mirror?

Optical lenses are polished glass or plastic substrates that are shaped with one or more curved surfaces that transmit light. Optical lenses may be used either uncoated or with an antireflective coating depending on their intended application. All optical lenses have a focal length which is the distance from the lens to the focal point along the optical axis of the lens.

In the first section of Lesson 4 , we learned that light is reflected by convex mirrors in a manner that a virtual image is formed. We also learned that there are two simple rules of reflection for convex mirrors. These rules represent slight revisions of the two rules given for concave mirrors. The revised rules can be stated as follows:. These two rules will be used to construct ray diagrams. A ray diagram is a tool that is used to determine the location, size, orientation, and type of image formed by a mirror.

#### Ray Diagram for Convex and Concave Mirror

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. Distorting mirrors are used for entertainment. They have convex and concave regions that produce deliberately distorted images. They also provide highly magnified or highly diminished smaller images when the object is placed at certain distances.

A concave mirror has the reflecting surface that caves inwards. Concave mirrors converge light to one prime focus point. Therefore, they are also called converging mirrors. They are used to focus light. The image formed by a concave mirror varies in size depending on the position of the object with respect to the mirror. The image can be real or virtual, erect or inverted and magnified, diminished or of the same size as that of the object, all depending on the position of the object. Real images can be brought onto a screen and they are always inverted.

We will examine here the difference between concave and convex mirrors. After that, we will get an idea about the types of mirrors, and different types of images formed by these lenses. First, we will study all the keywords related to the mirrors so that we can learn their meanings. This will help us understand the topic better. The direction of the light gets changed when it falls on an object. The image of an object is formed in the mirror due to the property of reflection of light. Have you ever wondered why are we able to see an object in the daylight but not in the dark night?

Predating even crude lenses, mirrors are perhaps the oldest optical element utilized by man to harness the power of light. Prehistoric cave dwellers were no doubt mesmerized by their reflections in undisturbed ponds and other bodies of water, but the earliest man-made mirrors were not discovered until Egyptian pyramidal artifacts dating back to around BC were examined.

We will examine here the difference between concave and convex mirrors. After that, we will get an idea about the types of mirrors, and different types of images formed by these lenses. First, we will study all the keywords related to the mirrors so that we can learn their meanings. This will help us understand the topic better.

The properties of spherical mirrors are discussed as we learn such terms as center of curvature, focal point, and principal axis. The properties of images formed by concave and convex mirrors are examined through ray diagrams. Plan and carry out investigations to characterize the properties and behavior of electromagnetic waves.

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