Concave mirror is also used by dentists, to see the large images of the teeth of patients. Concave and convex mirrors ray diagram for convex and. When a ray, parallel to principle axis strikes concave or convex mirrors, the reflected ray passes through the focus on the principle axis. One mark questions convex mirror for seeing traffic at. Some of the most important and common application of concave mirror are described below. Generally, a convex lens forms a real image, but it can also create a virtual image when the object is in the middle of the focus and optical centre. By and large, convex and concave mirrors are the two types of spherical mirrors with many uses which is not possible with a plane mirror. On the contrary, the image formed by the concave lens is erect, virtual and smaller, than the object. Examine the diagram label the diagram with the terminology. On another sheet draw curved mirror line of the concave cylindrical mirror not the convex side near the top of the paper. The convex mirror is curved as the outside of a bowl, reflects a wider viewing area and the images reflected appear smaller.
The convex mirror is suitable for convenient shop and big supermarket and any other corner where need antithief, it is used in the turning off the road and parking. The focal length of a convex lens is positive, while that of a concave lens is negative. The two mirrors are diametrically opposite to one another and produce different images at different positions. It bends the rays of light passing through it away from each other i. Image formation by curved mirrors a concave cylindrical mirror 1. A convex mirror can only produce a virtual image since all reflected rays will diverge. Concave mirrors are used in car headlights, flashlights, telescopes, microscopes, satellite dishes and camera flashes. The cartesian sign convention is used here using a ray parallel to the principal axis and one incident upon the center of the mirror, the position of the image can be constructed by backprojecting the rays which reflect from the mirror. Use the mirror equation to find the image distance. The most common nonspherical type are parabolic reflectors, found in optical devices such as reflecting telescopes that need. This product can be differentiated in several ways. The concave mirrors, curved as the inside of a bowl, are used for focusing light, and the images often appear larger and upside down to the original object. Uses of convex lens,concave lens,convex mirrors,concave. A spherical mirror is a part of a spherical reflecting surface.
The convex mirror is used as sideview mirror on the passengers side of a car because it forms an erect and smaller image for the way behind the car. The concave mirrors are uesd in the following optictical instruments. The following table illustrates the image formed by a concave mirror for different positions of the given object. How to use spoon as convex and concave mirror this is a simple diy science experiment that can be performed at home. Applications and uses of concave and convex mirrors teachoo. Lets explore the ray tracing technique to figure out the properties of images when things are kept in front of a concave or a convex mirror. Convex mirrors make objects seem to appear smaller than they are in reality, which allows for a wider viewpoint in a smaller space.
In ordinary usage, concave and convex are typically used when referring to glass surfaces, like the lenses of optical viewing equipment. Convex mirrors reflect images in a distorted shape due to their convex shape. Students can sort both the definitions and the different types of convex and concave lens on a recording sheet. To create a real image with a concave mirror, the object must be outside the focal point. Opticians use concave lenses to correct nearsightedness. Convex mirrors can be placed indoors or outdoors in most forms of. There are two types of curved mirror convex and concave. Difference between convex and concave lens with figure. A mirror that bulges outwards is called a convex mirror. Applications and uses of concave mirror in daily life byjus. Most curved mirrors have surfaces that are shaped like part of a sphere, but other shapes are sometimes used in optical devices. Dentists also use a concave mirror to get the bigger image of the teeth. The examples of convex mirrors are the mirrors used as rear side mirrors of vehicles, optical instruments, calling bell, etc.
Concave mirrors are also used in solarpowered gadgets and visual bomb detectors. Perhaps when you hear the word mirror, you think of an ordinary flat surface. In a paper published wednesday in the journal of optics, mr. Most devices that control light have one or more lenses in them some use only mirrors, which can do most of the same things that lenses can do. Concave mirrors are called converging mirrors because as light falls on the mirror, it collects the light and refocuses the parallel incoming rays. An object is placed at the following distances from a concave mirror of focal length 15 cm. With a compass draw an arc of radius equal to twice the focal length you have just determined. There are two types of spherical mirrors convex mirror and concave mirror. A curved mirror is a mirror with a curved reflecting surface. This convex and concave cut and paste has students sorting through 16 different lenses and their definitions. Uses of convex mirror image formation on a convex mirror. It is also useful in vehicle headlights and torches. They are used in street lights as they are good reflectors of light.
Both virtual and real image can be formed by a concave mirror. Snc 2d light and geometric optics convex mirrors extra practice worksheet a draw a ray diagram for each to locate the image. Let us find out what are mirror and lenses, phenomenas associated with them, applications, convex lens, concave lens, convex mirror, concave mirror in the form of mcqs. There are 4 worksheets dealing with concave and convex mirrors. There are two types of mirror, the convex and the concave. View and download powerpoint presentations on concave and convex lens ppt. In the concave mirror, the size of the image depends on the position of the object. Large concave mirrors are used to concentrate sunlight to produce maximum heat in the solar furnaces. Two convex mirrors are placed back to back to create the magnified effect. Convex mirror is a curved mirror for which the reflective surface bulges out towards the. 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. The worksheets come in two flavors with equations and without. To download free concave and convex mirror questions cyberphysics you need to register.
The convex mirror has a reflective surface that curves outward. A concave lens is a piece of round glass that is thinner at the centre than at the edges. How to use spoon as convex and concave mirror science. Concave and convex mirror terminology c f p principal axis reflect on the terminology used when f referring to concave and convex mirrors and the images they form. What are the uses of concave and convex lenses in daily. Our mission is to provide a free, worldclass education to anyone, anywhere. They are also used in flashlights to magnify the light, and can be found in door viewers or peepholes. The examples of concave mirrors are the mirrors used in automobile head lights, reflecting telescopes, torch lights, etc. Concave mirrors are most commonly used in shaving because of its reflective and curved surface. Each mirror has a radius of curvature r which is in. When a ray strikes concave or convex mirrors obliquely at its pole, it is reflected obliquely. The surface may be either convex bulging outward or concave bulging inward. Of cource the concave mirrors are very well known in studying physical optics.
Below you will find the home work assignment for cbse class 10 light reflection and refraction. Convex mirrors are also used in making of magnifying glasses. A convex mirror is used as a rearview mirror because the image provided by a convex mirror is erect hence, the image produced to the driver is not inverted, its right side is up. It can be difficult to determine the actual placement of objects. Concave and convex mirror questions cyberphysics concave and convex mirror questions construct optical diagrams to answer these questions. Dentists and ear, nose and throat doctors use concave mirrors during examinations to see a larger image of what they are examining. Difference between concave and convex mirrors is discussed and compared with a plane mirror. Find the focal length of a convex mirror of radius of curvature 1 m.
Free pdf download best collection of notes, important questions, sample papers and ncert solution for cbse class 10 science. In a plane mirror the image is the same size as the object and the same way up. Differentiate between convex mirror and concave mirror. A mirror is a part of a smooth and highly polished reflecting surface. Uses of the concave mirror and the convex mirror in our. Mirror used in supermarkets convex mirrors lens used as rear view mirrors convex mirror mirror used as streetlight reflectors convex mirrors mirror used in making lenses of sunglasses convex mirror mirror used in headlights of cars and other vehicles concave mirror mirror used in torch light concave mirror mirror used as magnifying concave mirror. Mark the center point p on the curved mirror line and determine the center of curvature for this mirror. Use your paper traces to determine the focal length of both concave and convex mirror surface. Concave mirrors and convex mirrors image formation, ray.
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