Nov 15, 2017 on the contrary, in a concave mirror, the reflecting surface bulges inwards the main difference between a convex and concave mirror lies in the image formed by the two mirrors, i. Examples the examples of concave mirrors are the mirrors used in automobile head lights, reflecting telescopes, torch lights, etc. Most curved mirrors have surfaces that are shaped like part of a sphere, but other shapes are sometimes used in optical devices. Convex mirrors are used as rearview mirrors in cars, to enable the driver to see the traffic behind him. The purpose of this activity is to measure the focal length of a concave mirror. One mark questions convex mirror for seeing traffic at the. Difference between convex and concave lens with figure. No matter how far you stand from a mirror, your image appears erect and smaller than you. It is also useful in vehicle headlights and torches. Uses of convex mirrors mirror at concealed entrances, mirror to deter shoplifters, and car door mirrors. Also, the main keywords related to these lenses, types of mirrors, types of images formed by these lenses. Therefore, it covers are a larger field of view compared to a plane or concave mirror.
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. Convex mirrors reflect light outwards, therefore they are not used to focus light. Mirrors and lenses both have the ability to reflect or refract light. How you appear in a concave mirror depends on how close you are to it. A mirror that bulges inwards is called a concave mirror. Not sure about mirrors but convex and concave lenses are used to treat conditions such as longshort sightedness. If you continue browsing the site, you agree to the use of cookies on this website. 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.
Science plane, concave and convex mirrors and reflection. Sep 27, 2019 uses of convex mirrorswe saw that, image formed by convex mirrors isposition of the objectposition of the imagesize of the imagenature of the imageat infinityat the focus f,behind the mirrorhighly diminished,pointsizedvirtual and erectbetween infinityand the pole p ofthe mirrorbetween p and f,behin. While clicking on the concave mirror button, a concave mirror, object and its image will be displayed in the window. Edurev class 10 question is disucussed on edurev study group by 7 class 10 students. A ray passing through the focus of a concave mirror or proceeding toward the focus of a convex mirror is reflected parallel to mirror axis. 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. A mirror that caves in, shape of a d convex mirror. The plane mirror is a flat surface, where the object reflected has an image the same size. The concave mirror is used in shaving mirrors to see a large image of the face. If the outside surface is polished, is it a convex mirror. The image formed by a convex mirror is a virtual image, while concave mirror forms a real or virtual image, depending on the position of the object. Difference between concave and convex mirrors aiye samjhein.
A convex mirror is also known as diverging mirror or the fish eye mirror. A spherical mirror is a part of a spherical reflecting surface. Of cource the concave mirrors are very well known in studying physical optics. Uses of convex mirrorswe saw that, image formed by convex mirrors isposition of the objectposition of the imagesize of the imagenature of the imageat infinityat the focus f,behind the mirrorhighly diminished,pointsizedvirtual and erectbetween infinityand the pole p ofthe mirrorbetween p and f,behin. It might help you to remember this if you think that when you look in a concave mirror, it looks like you are. Concave mirrors are used in optical instruments such as. The main difference between concave and convex mirrors is the most. Concave mirrors are also called as convergence mirrors, because concave mirrors cause the incoming parallel rays together and it causes these rays to converge. Lets practice problems involving applications of concave and convex mirrors. This demo uses spoons to show students the difference between a reflections created by curved mirrors and how distance from the mirror changes the ref. In this article, we will learn about image formation by concave and convex mirrors. Apr 16,2020 what are the uses of concave and convex mirrors in our daily life. It explains about properties of different types of mir. A concave surface curves inward, like the mouth of a cave.
Made by silvering the inner surface of a part of the hollow glass sphere. Concaveconvex mirror and lenses for ssc cgl, chsl, mts. A for concave lens and mirror focal length is negative. We will need huge plane mirrors to cover the width seen through a convex mirror of much smaller size secondly, for security purposes in building hallways. 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. They are also used to make telescope and ceiling dome mirrors.
There are two types of spherical mirrors convex mirror. Concave and convex mirrors ray diagram for convex and. Concave mirrors are used in the electron microscopes and magnifying glasses, they are used in the visual bomb detectors and they are used in the flash light mirror of camera. First, convex mirrors are used in the rearview mirrors of all vehicles. Made by silvering the outer surface of a part of the hollow glass sphere. Uses of convex mirror image formation on a convex mirror. How to use spoon as convex and concave mirror this is a simple diy science experiment that can be performed at home. This handson activity allows your students to discover the difference between reflections in concave and convex mirrors for themselves using spoons. On the contrary, in a concave mirror, the reflecting surface bulges inwards the main difference between a convex and concave mirror lies in the image formed by the two mirrors, i. A convex mirror can only produce a virtual image since all reflected rays will diverge. Watch this video to know more about the applications of concave mirrors. 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.
Convex mirrors allow drivers to see more because they provide a greater field of view by scaling down the objects they reflect. All of them are segments of spheres centered on a horizontal axis. Concave mirrors show different types of images, depending on the distance between the mirror and the object reflected. 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. The reflective surface of the convex mirror bulges towards the light source. There are two types of curved mirror convex and concave. Convex mirrors are useful because by demagnifying they squeeze a lot of the world into a small image, so they allow us to look in lots of directions at once. During shaving, the concave mirror forms an enlarged and erect image of the face when the mirror.
Ncert cbse solutions for class 10 science chapter 10. You must be able to draw ray diagrams for plane mirrors, and be able to calculate image and object heights, distances, and magnifications. Concave and convex lenses the type of lenses which converge the light beam coming from the source to one point on the other side to form an image is called as a convex lens, while the concave lens which is thinner at the centre and gets thicker as we move towards the edges is called as concave lens. Concave and convex lens uses difference between concave. Uses of convex lens,concave lens,convex mirrors,concave. Christmas balls, spoons, pans, windows, computer screens. Quiz questions will address topics like image distance and an image formed by a convex mirror.
Concave mirrors are used quite frequently in daytoday life. Convex mirrors show things the right way up and usually smaller. 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. For plane mirrors, the object distance equals the image distance and all images are erect and virtual. Concave mirrors are used in car headlights, in dentists offices and in makeup mirrors. 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. Convex mirrors have reflective surfaces that curve outward. The convex mirror has a reflective surface that curves outward.
Jun 16, 2018 the video in english explains about different types of mirror i. A lake with clear water and a dark bottom mirrors very well when the surface is flat no wind. Since convex mirrors have a wider view field than concave mirrors and plane mirrors, they are mostly used in side mirrors of automobiles. Stay tuned with byjus to learn more interesting physics concepts like convex mirror, laws of motion, etc.
How to use spoon as convex and concave mirror science. Aug 11, 2017 this video contains the properties of concave mirror, concave lens, convex mirror and convex lens and also the types of questions, which could be asked fro. Uses of concave and convex lens in daily life teachoo. They put the concave mirror on their patients forehead. Chapter 34a reflection and mirrors geometrical a powerpoint presentation by paul e. Uses of the concave mirror and the convex mirror in our. The quiz and worksheet will assess what you know about convex mirrors. For converging mirrors and diverging mirrors, the focal length is equal to onehalf the radius. Three types of mirrors are plane mirrors, concave mirrors and convex mirrors.
Concave mirrors are also known as a converging mirror since the rays converge after falling on the concave mirror while the convex mirrors are known as diverging mirrors as the rays diverge after falling on the convex mirror. If you have trouble remembering whether a surface is convex or concave, there is an easy way to find out. A mirror that bulges outwards is called a convex mirror. Special mirrors all kinds of shiny objects act like mirrors. When parallel rays could be from a distant object incident on a concave mirror, the reflected rays converge to a focal point f, hence also called converging mirror. Eight important differences between convex and concave lens are compiled in the article in tabular form. On the contrary, concave mirrors are used in torches and vehicle headlights. Types of mirrors, plane, spherical, concepts, videos. Figure 1 shows the three types of mirrors we will consider. When the light rays from the light source are reflected from the concave mirror, it is focused into the ear, nose, or throat of the patient making the infected parts more visible. In case of convex mirror, parallel rays are diverged. On another sheet draw curved mirror line of the concave cylindrical mirror not the convex side near the top of the paper. This is why they show up in sideview mirrors on cars and in security mirrors on roads and in stores. The surface may be either convex bulging outward or concave recessed inward.
This one factor allows a very large usage of convex mirrors. Conversely, the concave lenses are thinner at the centre and thicker at its edges, in. Concave and convex maintain their status as adjectives when used in this context. Compared to other reflective mirrors, the field of view for a convex mirror is the maximum.
I will tell only 10 common uses of convex mirror because there are many of them concept. The law of reflection applies, just as it does for a plane mirror, i. A curved mirror is a mirror with a curved reflecting surface. Uses of concave mirror 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.
Background concave and convex mirrors are examples of spherical mirrors. Uses of convex lens, concave lens, convex mirrors, concave mirrors lenses and mirrors applications study for exams optics,physics s. The concave mirrors are uesd in the following optictical instruments. Searchlights, floodlights, car headlights, dentists mirror. Image formation by curved mirrors a concave cylindrical mirror 1.
All images formed from convex mirrors are erect, virtual, and diminished in size. Concave mirrors are used to focus light, to produce a parallel beam in car headlights, and so you can have a close look while shaving. Uses of convex mirror and its applications in the practical world. Differentiate between convex mirror and concave mirror. Applications of concave and convex mirrors practice. Concave mirrors form real and inverted images except when the object is between pole and focus. These mirrors are always form virtual, erect and diminished regardless of the distance between the object and mirror. The questions and answers of what are the uses of concave and convex mirrors in our daily life. Convex mirrors form virtual and erect images irrespecive of the position of the object. Aug 24, 2017 the detailed explaination about concave and convex mirrors is as follows.
A concave mirror is a curved mirror that bulges inward. Similarly transparent plastic mirrors reasonably well when put on top of dark paper lesson 3. Geometrical optics in the study of how light behaves, it is. A concave mirror is a mirror that is curved inward in the middle. It cures defects called hypermetropia far sightedness where patients cant see objects closer to them uses of concave lens we saw that, image formed by concave lens is. During shaving, the concave mirror forms an enlarged and. 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. You must understand the differences between these two kinds of mirrors, be able to draw. Convex mirror images are upright and appear farther away than they really are. In a plane mirror the image is the same size as the object and.
There will be a window having two buttons named concave mirror and convex mirror. What are the uses of concave and convex mirrors in our. Concave mirrors are used by doctors to focus light into ears,throat etc. Concave and convex mirrors used in various dentist tools and for those ent specialists who want to focus inner parts like throat, ear, and teeth. There are standard and innovative uses for mirrors. Convex mirrors are also used in various other places like as a street light reflectors as it can spread light over bigger areas. Dentists also use a concave mirror to get the bigger image of the teeth. The terms concave and convex are from the perspective of the object. Draw a ray diagram to show the formation of a virtual image by a concave mirror. 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. Thanks to the optical properties of convex mirrors, motorists have a buffer against all manner of dangers.
Sign convention for spherical mirrors the sign conventions for the given quantities in the mirror equation and magnification equations are as follows. Concave mirrors are also used in satellite dishes, electronic microscope, visual bomb detectors, etc. For session 20192020 free pdf will be available at. If youre seeing this message, it means were having trouble loading external resources on our website. Each mirror has a radius of curvature r which is in. What is the use of concave and convex mirror answers. This is because the rays of light falling parallel once reflected diverge. This property has put mirrors and lenses in use for centuries. Options are 40cm,20,60,30all in cm asked by priyanka th november 2017 9. For concave mirror, the reflected rays converge to the focal. What are the uses of concave and convex mirrors in our daily. Asked in physics what everyday uses can you find for a convex.
Difference between convex and concave mirror with comparison. Concave mirrors are most commonly used in shaving because of its reflective and curved surface. Reflect on the terminology used when referring to concave and convex mirrors and the images they form. Mirror, mirror on the wall eight lessons on mirrors. Uses of the concave mirror and the convex mirror in our daily life. Used to focus light, they reflect it inward toward one focal point. Mark the center point p on the curved mirror line and determine the center of curvature for this mirror. 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. They give a larger view when compared to plane mirrors. To create a real image with a concave mirror, the object must be outside the focal point. One mark questions convex mirror for seeing traffic at.
Cbse 2011 we require minimum two rays for locating the image formed by a concave 27. This discussion on what are the uses of concave and convex mirrors in our daily life. As of 2010, mirrors and lenses are so prevalent that most people use them every day, regardless of whether or not they consciously perceive the use. Uses of concave and convex mirror in hindi unacademy. Use a light source, concave mirror, and half screen accessory on an optics bench to measure the focal length of the concave mirror. The concave mirrors, curved as the inside of a bowl, are used for focusing light, and the images often appear larger and. In many shaving mirrors combination of concave and convex mirror issued to enlarge and ultra focus the face. Applications and uses of concave mirror in daily life byjus. Applications and uses of concave and convex mirrors teachoo. One such difference is the structure of convex lens is like, thicker at the centre and thinner at the edges. Now, let us see where convex lens is used convex lens is used as it is used as magnifying glass it is used to make microscope it is used in spectacles to correct the vision. Drivers use convex mirror as rear view mirror because a convex mirror diverges the incident beam of light and always forms virtual, small and erect image between the pole and focus. There are two types of mirror, the convex and the concave. For drivers, the benefit of having convex rearview mirrors is simple.
223 1282 1040 974 1065 1497 785 1087 734 785 1330 413 954 957 822 366 761 1171 929 538 1344 831 1546 722 581 478 812 1186 1324 996 1472 233 121 1576 1520 746 420 697 1071 1013 935 818 683 1494