May 10, 2016 a powerpoint presentation about curved mirrors concave and convex in science 10 slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. When a ray strikes concave or convex mirrors obliquely at its pole, it is reflected obliquely. In a plane mirror the image is the same size as the object and the same way up. The plane mirror is a flat surface, where the object. This property is known as the reversibility of light. The different shapes of plane, concave, and convex mirrors cause them to reflect light in distinct ways. There are 4 worksheets dealing with concave and convex mirrors. Sunglasses convex mirrors are used to make sunglasses lenses. Fun interactive lab for california life science standard 7. Concave mirrors are silvered on the inside of the sphere and convex mirrors are silvered on the outside of the sphere.
Large concave mirrors are used to concentrate sunlight to produce heat in solar furnace. This activity leads students through a practical investigation to find out what concave and convex mirrors do to light rays. Concave mirrors are most commonly used in shaving because of its reflective and curved surface. A concave surface is like the interior of a circle. Each mirror has a radius of curvature r which is in. A convex mirror can only produce a virtual image since all reflected rays will diverge. Convex mirrors a convex mirror curves outward like the back of a spoon. A microscope, like a reflecting telescope, uses a concave mirror, a plane mirror, and a convex lens. Understanding the different uses of concave mirror and.
The most common nonspherical type are parabolic reflectors, found in optical devices such as reflecting. Concave and convex are used in many lenses, mirrors, etc. One mark questions convex mirror for seeing traffic at. For drivers, the benefit of having convex rearview mirrors is simple. In this lesson, learn about the types of images that can be formed by a convex mirror and some of the uses of convex mirrors. Concave mirrors are used in motor vehicle headlights to send out strong beams of light. If something is put directly in front of the burn point the heat is strong enough to. Feb 28, 2016 of cource the concave mirrors are very well known in studying physical optics. Convex mirrors are used as streetlight reflectors as they spread light over greater area both concave and convex lenses are used in glasses. Applications of convex mirrors microscope under vehicle search mirrors rear view mirror security at hospitals, shopping areas at blind turns what is the convex mirror used on roads called.
Concave mirrors are used in car headlights, in dentists offices and in makeup mirrors. Convex mirrors are also used in making of magnifying glasses. 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. Cbse 2011 we require minimum two rays for locating the image formed by a concave 27. Vehicles convex mirrors are often found on the passenger sides of motor vehicles. On the other hand, a convex lens is thicker in the middle and thinner at the edges. They are used in street lights as they are good reflectors of light.
Convex mirrors can be found indoors and out, on vehicles and in conjunction with security cameras. The ray diagram constructed earlier for a convex mirror revealed that the image of the object was virtual, upright, reduced in size and located behind the mirror. It might help you to remember this if you think that when you look in a concave mirror, it looks like you are looking into a cave. Two convex mirrors are placed back to back to create the magnified effect. Applications and uses of concave and convex mirrors teachoo. This lab requires the teacher to create the lab supplies which can be. Convex mirrors allow drivers to see more because they provide a greater field of view by scaling down the objects they reflect.
Aug 25, 20 6 compare between the convex and concave lens. Figure 1 shows the three types of mirrors we will consider. This is a great way to introduce curved mirrors to students, and have them investigate what they do for themselves. The principal focus of a convex mirror is a point on its principal axis from which a beam of light rays, initially parallel to the axis, appears to diverge after being reflected from the convex mirror. There are two types of mirror, the convex and the concave. 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. Thanks to the optical properties of convex mirrors, motorists have a buffer against all manner of dangers. Some of the worksheets below are curved mirrors worksheet, uses of curved mirrors, the difference between a concave and convex mirror, diagrams for convex mirrors. Drivers use convex mirror as a rearview mirror in automobiles because of the following two reasons. The worksheets come in two flavors with equations and without. All large telescopes and many small ones use a large concave mirror at the bottom of the telescope to gather light and form a small image on a small plane mirror at the top. A convex lens gives a real, inverted image if the object is outside the focal length of the lens. For both concave and convex, mirrors, ray p and ray f can be reversed to travel back along the same path.
Another important application of concave mirrors is the astronomical telescope. A powerpoint presentation about curved mirrors concave and convex in science 10 slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The surface may be either convex bulging outward or concave recessed inward. If a concave mirror is thought of as being a slice of a. Difference between concave and convex concave vs convex. If a concave mirror is thought of as being a slice of a sphere, then there would be a line passing through the center of the sphere and attaching to the mirror in the. There are two types of curved mirror convex and concave. Difference between convex and concave mirror convex vs. Understanding the different uses of concave mirror and convex. Sep 07, 2018 applications of convex mirrors microscope under vehicle search mirrors rear view mirror security at hospitals, shopping areas at blind turns what is the convex mirror used on roads called. I use simple small ones that are cheap and easy to buy.
Uses of the concave mirror and the convex mirror in our. Convex mirrors are often used in the hallways of buildings including stores, schools, hospitals, hotels and apartment buildings. If you continue browsing the site, you agree to the use of cookies on this website. A mirror that bulges outwards is called a convex mirror. The plane mirror is a flat surface, where the object reflected has an image the same size.
The concave mirrors are uesd in the following optictical instruments. The terms concave and convex are from the perspective of the object. Jun 15, 2007 concave mirrors are used to gather sunlight and contract it to a point called the burn point. Write uses of concave and convex mirror and lens science. Concave mirrors are called converging mirrors because as light falls on the mirror, it collects the light and refocuses the parallel incoming rays. Sep 10, 2008 ray diagrams 3 of 4 concave and convex lenses and mirrors. Apr 24, 2016 there are two types of spherical mirrors. A curved mirror is a mirror with a curved reflecting surface. Convex mirrors have reflective surfaces that curve outward. Concave and convex mirrors a fun investigation teaching. The size of this burn point depends on how big the concave mirror is. These mirrors help reflect some of the sunlight away from the wearers eyes. On the other hand, a convex surface is similar to the exterior of a circle or sphere.
Of cource the concave mirrors are very well known in studying physical optics. Uses of convex mirror image formation on a convex mirror. Spherical mirrors can be thought of as a portion of a sphere which was sliced away and then silvered on one of the sides to form a reflecting surface. The focus of a convex mirror is situated behind the mirror. The point where any of the two construction lines cross or intersect is the. All of them are segments of spheres centered on a horizontal axis. 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. To create a real image with a concave mirror, the object must be outside the focal point. Quiz on mirrors ian upright object is located in front of a convex mirror a distance greater than the focal length. Large hospitals, offices or stores sometimes make use of convex mirrors in order to let people see what is around a corner to avoid people running into each other and prevent minormajor collisions. Concave and convex functions 1concaveandconvexfunctions 1. When a ray, parallel to principle axis strikes concave or convex mirrors, the reflected ray passes through the focus on the principle axis.
A convex mirror has a wider range of view than a plane mirror, giving it many uses, especially relating to safety. These mirrors make objects appear smaller than they really are. Concave mirrors and convex mirrors image formation, ray. To compare, flat mirrors show objects at accurate distances and sizes, and concave mirrors, while able to show real images, often invert images as well. Objects reflected in concave mirrors often appear bigger than they really are, although the specifics of how the image appears depends upon the objects distance from the mirror. For plane mirrors, the object distance equals the image distance and all images are erect and virtual. Convex lenses are converging lenses, and concave lenses are diverging lenses. Instead of reflecting an image, they are used to focus the light from the bulb. When a ray, passing through focus strikes concave or convex mirrors, the reflected ray will pass parallel to the principle axis.
Lens in a washer lab using convex and concave lens. On the other hand, a convex mirror is a spherical mirror in which the reflecting surface and the center of curvature lie on the opposite sides of the. Convex mirror whose outer surface is reflecting,it forms virtual image and is used to get magnified image,while concave mirror whose inner surface is reflecting,it forms real and virtual images and its is used to get small images. Sep 19, 2016 for both concave and convex, mirrors, ray p and ray f can be reversed to travel back along the same path. The concave mirror is a converging mirror, so that it is used for many purposes, it is used as a torch to reflect the light, it is used in the aircraft landing at the airports to guide the aeroplanes, it is used in shaving to get an enlarged and erect image of the face. A concave lens is thinner in the middle and thicker at the edges.
May 31, 2009 ray diagrams were constructed in order to determine the location, size, orientation, and type of image formed by concave mirrors. It will give a virtual upright image if the object is within the focal length. Three types of mirrors are plane mirrors, concave mirrors and convex mirrors. The convex mirror is curved as the outside of a bowl, reflects a wider viewing area and the images reflected appear smaller. Applications of concave mirrors solar concentrator makeup. A concave mirror is a curved mirror that bulges inward. Convex mirror uses of convex mirror definition equation. Students will have fun learning about how convex and concave lens work.
The point where any of the two construction lines cross or intersect is the position of the image formed by the curved mirrors. The lab activity requires the use of concave and convex lenses. Ray diagrams 3 of 4 concave and convex lenses and mirrors. They are used in driveways, roads, and alleys to provide safety to all the bikers and motorists at curves and turns and other places where there is a lack of visibility. Some of the most important and common application of concave mirror are described below. For converging mirrors and diverging mirrors, the focal length is equal to onehalf the radius. The difference is that the curved surface of a concave mirror reflects light in a unique way. Concave mirrors and convex mirrors image formation, ray diagram. Applications and uses of concave mirror in daily life byjus. Examples of concave mirrors headlights of a car o dentist mirror o the source of light is placed at the focus of the concave reflector focus light on the tooth to be examined makeup mirrors o enlarges the image to be easier to see 7. Oct 03, 2019 some of the worksheets below are curved mirrors worksheet, uses of curved mirrors, the difference between a concave and convex mirror, diagrams for convex mirrors.
Most curved mirrors have surfaces that are shaped like part of a sphere, but other shapes are sometimes used in optical devices. A refracting telescope uses two convex lenses to magnify images in the sky. The flash light mirror of camera also makes use of concave mirrors. A convex mirror always forms an erect, virtual and diminished image of an object placed anywhere in front of it. A ray parallel to mirror axis passes through the focal point of a concave mirror or appears to come from the focal point of a convex mirror. The expanded field of view results in the smallerthanreallife image you see hence the typical warning objects in mirror are closer than they appear. Concave mirrors are used as shaving mirrors to see a larger image of the face. If something is put directly in front of the burn point the heat is strong enough to melt plastic and burn pieces of wood. In addition, you need to have a small object penny, pair of dice, etc and a large object cabinet, door, tv, etc for students to examine. Image formed by a plane mirror, image of an extended object, image of a distant object, paraxial rays, focal length. Concave mirrors are used to gather sunlight and contract it to a point called the burn point. Rays of light from the bulb are reflected off the concave mirror, creating a strong beam that shines on the road. Snc 2d light and geometric optics convex mirrors extra practice worksheet a draw a ray diagram for each to locate the image.
A concave mirror is a mirror that is curved inward in the middle. A concave mirror is a spherical mirror in which the reflecting surface and the center of curvature fall on the same side of the mirror. All images formed from convex mirrors are erect, virtual, and diminished in size. Both sideview and rearview mirrors are convex, which means that the image focal point is actually behind the mirrors and the reflected rays spread outward. The purpose of the plane mirror is simply to reflect the light into the eyepiece or. Draw a ray diagram to show the formation of a virtual image by a concave mirror. Concave mirrors are commonly used in torches, searchlights and vehicles headlights to get powerful parallel beams of light. The dentists use concave mirrors to see large images of the teeth of patients. A ray passing through the focus of a concave mirror or proceeding toward the. 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.
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