Aug 24, 2017 the detailed explaination about concave and convex mirrors is as follows. Cbse 2011 we require minimum two rays for locating the image formed by a concave 27. Apr 16,2020 what are the uses of concave and convex mirrors in our daily life. Conversely, the concave lenses are thinner at the centre and thicker at its edges, in. Concave and convex mirrors ray diagram for convex and. Also, the main keywords related to these lenses, types of mirrors, types of images formed by these lenses. Lets practice problems involving applications of concave and convex mirrors.
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. In many shaving mirrors combination of concave and convex mirror issued to enlarge and ultra focus the face. A mirror that bulges outwards is called a convex mirror. 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. A mirror that bulges inwards is called a concave 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. Three types of mirrors are plane mirrors, concave mirrors and convex mirrors. Uses of the concave mirror and the convex mirror in our. 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. Reflect on the terminology used when referring to concave and convex mirrors and the images they form. How you appear in a concave mirror depends on how close you are to it. These mirrors are always form virtual, erect and diminished regardless of the distance between the object and mirror. 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.
It explains about properties of different types of mir. The concave mirrors, curved as the inside of a bowl, are used for focusing light, and the images often appear larger and. This is why they show up in sideview mirrors on cars and in security mirrors on roads and in stores. Chapter 34a reflection and mirrors geometrical a powerpoint presentation by paul e. The purpose of this activity is to measure the focal length of a concave mirror. Asked in physics what everyday uses can you find for a convex. Figure 1 shows the three types of mirrors we will consider. Concave mirrors form real and inverted images except when the object is between pole and focus. How to use spoon as convex and concave mirror science.
There are standard and innovative uses for mirrors. Mark the center point p on the curved mirror line and determine the center of curvature for this mirror. Difference between concave and convex mirrors aiye samjhein. If the outside surface is polished, is it a convex mirror. A spherical mirror is a part of a spherical reflecting surface. In this article, we will learn about image formation by concave and convex mirrors. Convex mirror images are upright and appear farther away than they really are. During shaving, the concave mirror forms an enlarged and. It might help you to remember this if you think that when you look in a concave mirror, it looks like you are. To create a real image with a concave mirror, the object must be outside the focal point. Edurev class 10 question is disucussed on edurev study group by 7 class 10 students. The questions and answers of what are the uses of concave and convex mirrors in our daily life. Difference between convex and concave mirror with comparison.
A for concave lens and mirror focal length is negative. This is because the rays of light falling parallel once reflected diverge. Concave and convex maintain their status as adjectives when used in this context. If you have trouble remembering whether a surface is convex or concave, there is an easy way to find out. The convex mirror has a reflective surface that curves outward. Watch this video to know more about the applications of concave mirrors. The concave mirror is used in shaving mirrors to see a large image of the face. 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. Concave mirrors are used quite frequently in daytoday life.
While clicking on the concave mirror button, a concave mirror, object and its image will be displayed in the window. Convex mirrors are also used in various other places like as a street light reflectors as it can spread light over bigger areas. A curved mirror is a mirror with a curved reflecting surface. You must understand the differences between these two kinds of mirrors, be able to draw. Convex mirrors allow drivers to see more because they provide a greater field of view by scaling down the objects they reflect. There are two types of mirror, the convex and the concave. Draw a ray diagram to show the formation of a virtual image by a concave mirror. What is the use of concave and convex mirror answers. You must be able to draw ray diagrams for plane mirrors, and be able to calculate image and object heights, distances, and magnifications. Use a light source, concave mirror, and half screen accessory on an optics bench to measure the focal length of the concave mirror. 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. All images formed from convex mirrors are erect, virtual, and diminished in size. 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.
This property has put mirrors and lenses in use for centuries. Dentists also use a concave mirror to get the bigger image of the teeth. A concave surface curves inward, like the mouth of a cave. Background concave and convex mirrors are examples of spherical mirrors. There are two types of spherical mirrors convex mirror. 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. Options are 40cm,20,60,30all in cm asked by priyanka th november 2017 9. Convex mirrors are used as rearview mirrors in cars, to enable the driver to see the traffic behind him. 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. Concave mirrors are used by doctors to focus light into ears,throat etc. First, convex mirrors are used in the rearview mirrors of all vehicles. The quiz and worksheet will assess what you know about convex mirrors.
Mirrors and lenses both have the ability to reflect or refract light. Eight important differences between convex and concave lens are compiled in the article in tabular form. Therefore, it covers are a larger field of view compared to a plane or concave mirror. 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. Convex mirrors reflect light outwards, therefore they are not used to focus light. One such difference is the structure of convex lens is like, thicker at the centre and thinner at the edges. It is also useful in vehicle headlights and torches. Christmas balls, spoons, pans, windows, computer screens. Made by silvering the outer surface of a part of the hollow glass sphere. For concave mirror, the reflected rays converge to the focal.
Most curved mirrors have surfaces that are shaped like part of a sphere, but other shapes are sometimes used in optical devices. 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. Concave mirrors are most commonly used in shaving because of its reflective and curved surface. Concave mirrors are used in car headlights, in dentists offices and in makeup mirrors. Examples the examples of concave mirrors are the mirrors used in automobile head lights, reflecting telescopes, torch lights, etc. Applications and uses of concave mirror in daily life byjus. They give a larger view when compared to plane mirrors. Used to focus light, they reflect it inward toward one focal point. All of them are segments of spheres centered on a horizontal axis. This discussion on what are the uses of concave and convex mirrors in our daily life. 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. Convex mirrors have reflective surfaces that curve outward. Concave mirrors show different types of images, depending on the distance between the mirror and the object reflected. The plane mirror is a flat surface, where the object reflected has an image the same size.
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. 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. Uses of concave and convex lens in daily life teachoo. Uses of convex mirrors mirror at concealed entrances, mirror to deter shoplifters, and car door mirrors. A convex mirror is also known as diverging mirror or the fish eye mirror. In case of convex mirror, parallel rays are diverged. Applications and uses of concave and convex mirrors teachoo. 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.
What are the uses of concave and convex mirrors in our. On the contrary, concave mirrors are used in torches and vehicle headlights. 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. 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. Science plane, concave and convex mirrors and reflection. 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 will be a window having two buttons named concave mirror and convex mirror. Not sure about mirrors but convex and concave lenses are used to treat conditions such as longshort sightedness. Since convex mirrors have a wider view field than concave mirrors and plane mirrors, they are mostly used in side mirrors of automobiles. A lake with clear water and a dark bottom mirrors very well when the surface is flat no wind. 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 session 20192020 free pdf will be available at. 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. Concave and convex lens uses difference between concave. Concaveconvex mirror and lenses for ssc cgl, chsl, mts. The surface may be either convex bulging outward or concave recessed inward. They put the concave mirror on their patients forehead.
Similarly transparent plastic mirrors reasonably well when put on top of dark paper lesson 3. One mark questions convex mirror for seeing traffic at the. In a plane mirror the image is the same size as the object and. Uses of convex lens,concave lens,convex mirrors,concave.
Applications of concave and convex mirrors practice. Concave mirrors are used in optical instruments such as. Each mirror has a radius of curvature r which is in. This one factor allows a very large usage of convex mirrors. No matter how far you stand from a mirror, your image appears erect and smaller than you. 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. Uses of concave and convex mirror in hindi unacademy. For plane mirrors, the object distance equals the image distance and all images are erect and virtual. Made by silvering the inner surface of a part of the hollow glass sphere. Geometrical optics in the study of how light behaves, it is. Stay tuned with byjus to learn more interesting physics concepts like convex mirror, laws of motion, etc. 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. 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.
Differentiate between convex mirror and concave mirror. What are the uses of concave and convex mirrors in our daily. Convex mirrors form virtual and erect images irrespecive of the position of the object. For drivers, the benefit of having convex rearview mirrors is simple. 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. 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 are also used to make telescope and ceiling dome mirrors. Quiz questions will address topics like image distance and an image formed by a convex mirror.
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. Thanks to the optical properties of convex mirrors, motorists have a buffer against all manner of dangers. Mirror, mirror on the wall eight lessons on mirrors. A concave mirror is a mirror that is curved inward in the middle. A concave mirror is a curved mirror that bulges inward. Uses of convex mirror and its applications in the practical world. How to use spoon as convex and concave mirror this is a simple diy science experiment that can be performed at home. For converging mirrors and diverging mirrors, the focal length is equal to onehalf the radius. Ncert cbse solutions for class 10 science chapter 10. Of cource the concave mirrors are very well known in studying physical optics. On another sheet draw curved mirror line of the concave cylindrical mirror not the convex side near the top of the paper. Image formation by curved mirrors a concave cylindrical mirror 1. Uses of convex lens, concave lens, convex mirrors, concave mirrors lenses and mirrors applications study for exams optics,physics s.
Special mirrors all kinds of shiny objects act like mirrors. 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. If youre seeing this message, it means were having trouble loading external resources on our website. Searchlights, floodlights, car headlights, dentists mirror. A convex mirror can only produce a virtual image since all reflected rays will diverge. Uses of the concave mirror and the convex mirror in our daily life. The main difference between concave and convex mirrors is the most. A mirror that caves in, shape of a d convex mirror. 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. The terms concave and convex are from the perspective of the object. One mark questions convex mirror for seeing traffic at. The law of reflection applies, just as it does for a plane mirror, i. Types of mirrors, plane, spherical, concepts, videos. The reflective surface of the convex mirror bulges towards the light source.
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 concave mirrors are uesd in the following optictical instruments. Compared to other reflective mirrors, the field of view for a convex mirror is the maximum. There are two types of curved mirror convex and concave. Jun 16, 2018 the video in english explains about different types of mirror i. Concave mirrors are also used in satellite dishes, electronic microscope, visual bomb detectors, etc. If you continue browsing the site, you agree to the use of cookies on this website.