If the inside surface of the spherical mirror is polished, it is a concave mirror. Made by silvering the inner surface of a part of the hollow glass sphere. A wide variety of convex and concave mirrors options are available to you, such as metal, glass. Apr 23, 2020 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. 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. This type of mirror forms a part of the simplest image forming optical system. Dec 08, 2018 the focal length of a convex lens is positive, while that of a concave lens is negative. Ncert cbse solutions for class 10 science chapter 10. The focal length f of the concave mirror is 4 cm, therefore the patients teeth should be less than 4 cm in front of a concave mirror.
Try to explain the terminology to your partner before looking at the definition cards. 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. The law of reflection applies, just as it does for a plane mirror, i. Difference between convex and concave mirror with comparison. There are numerous uses of concave mirror in daily life. A convex mirror can only produce a virtual image since all reflected rays will diverge. Diminished hence, the image produced is much smaller than the actual size of the object. Convex mirror problems and solutions solved problems in. The lesson covers plane, convex, and concave spherical mirrors with ray diagrams and characteristics. On the contrary, the image formed by the concave lens is erect, virtual and smaller, than the object. Calculate the image position of a cologne bottle placed in front of the mirror at a distance of 93 cm.
Applications and uses of concave and convex mirrors teachoo. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. Light rays which are incident along a line through the focal point blue re. Pdf the properties of real and virtual images formed by lenses and mirrors are. Difference between convex and concave lens with figure. 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. We have another rule, that when the curvature center c is on the same side of the outgoing ray, then the radius is positive. Uses of convex mirror image formation on a convex mirror. We look at the image formation by these spherical lenses using ray diagrams. Move the arrow to the right side of the mirror to get a convex mirror. This can be verified experimentally by observing the image of a. Compared to other reflective mirrors, the field of view for a convex mirror is the maximum. A convex mirror is a curved mirror with the reflecting surface on the outerside. For concave mirror, the reflected rays converge to the focal.
In other words, if the mirror coating lies in the inside of the spherical surface, then it is known as a convex mirror. Curved mirrors concave and convex linkedin slideshare. Convex mirror is a curved mirror for which the reflective surface bulges out towards the. 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. Pdf optical images due to lenses and mirrors researchgate. If magnification m is positive, it means image formed is virtual and erect if magnification m is negative, it means image formed is real and inverted questions example 10. Convex mirror is used as the rear mirror of the vehicles because, the convex mirror enables a driver to view large area of traffic behind him by forming a. Plane, concave and convex mirrors and reflection hindi duration. 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. 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.
Students must then look back and make associations with image formation based upon type of mirror and the location of the object relative to. This one factor allows a very large usage of convex mirrors. Move the arrow to the right side of the mirror to get a. Each mirror has a radius of curvature r which is in. It is used in car rearview mirrors and surveillance mirrors because it can be seen in a wide range. A for concave lens and mirror focal length is negative. Options are 40cm,20,60,30all in cm asked by priyanka th november 2017 9. Free pdf download best collection of notes, important questions, sample papers and ncert solution for cbse class 10 science. Convex mirror for a convex mirror, the radius of curvature is inside the mirror. Mar 03, 2019 convex and concave lenses are spherical lenses. Concave and convex mirrors ray diagram for convex and. The sign conventions for the given quantities in the mirror equation and magnification equations are as follows. Concave mirrors and convex mirrors image formation, ray diagram. Therefore, it covers are a larger field of view compared to a plane or concave mirror.
If the outside surface is polished, is it a convex mirror. Onehalf of a convex lens is covered with a black paper. The purpose of this activity is to measure the focal length of a concave mirror. 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. Yes, it will produce a complete image of the object, as shown in the figure above. The concave mirror differs greatly depending on whether the object is inside. A convex mirror is a spherical mirror in which the reflecting surface and the center of curvature lie on the opposite sides of the mirror. To create a real image with a concave mirror, the object must be outside the focal point. There are two types of spherical mirrors, convex mirror and concave mirror. While clicking on the concave mirror button, a concave mirror, object and its image will be displayed in the window. Concave mirror problems and solutions solved problems. A concave mirror is a curved mirror with the reflecting surface on the hollow side created by depositing silver metal on the outer curved side. In a plane mirror the image is the same size as the object and the same way up. A concave mirror which is also called as converging mirror has its reflecting surface bulging inwards, i.
Concave mirror is used in the solar furnace, the sun rays are focused at a point by the concave mirror. In other words, if the mirror coating lies outside of the spherical surface, then it is known as a concave mirror. There are two types of curved mirror convex and concave. Incident light rays which are parallel to the central axis red re. Concave mirrors reflect light inward to one focal point. Quiz questions will address topics like image distance and an image formed by a convex mirror.
Made by silvering the outer surface of a part of the hollow glass sphere. Snc 2d light and geometric optics convex mirrors extra practice worksheet a draw a ray diagram for each to locate the image. Difference between concave and convex concave vs convex. The focal length of a convex lens is positive, while that of a concave lens is negative.
Find the focal length of a convex mirror of radius of curvature 1 m. When parallel rays could be from a distant object incident on a concave mirror, the reflected. Differentiate between convex mirror and concave mirror. The quiz and worksheet will assess what you know about convex mirrors. A concave mirror is a mirror that is curved inward in the middle. Difference between convex and concave mirror convex vs. Second formula for magnification there is another formula of magnification note.
Light ray rules for convex lens and concave lens are discussed. 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. A mirror is a surface which reflects a clear image. 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. The minus sign indicates that the focal point of convex mirror is virtual. This worksheet tasks students with predicting and describing image formation off both convex and concave mirrors.
Below you will find the home work assignment for cbse class 10 light reflection and refraction. Examine the diagram label the diagram with the terminology. Define the following terms in relation to concave spherical mirror. Learn about concave mirrors and convex mirrors indepth. A mirror is a part of a smooth and highly polished reflecting surface. Optics exam2 and problem solutions physics tutorials.
Concave mirror converging lens f 0 s 2f f 2f real inverted enlarged s 0 s concave and convex 1. There are two types of spherical mirrors convex mirror and concave mirror. Use a light source, concave mirror, and half screen accessory on an optics bench to measure the focal length of the concave mirror. Concave mirrors and convex mirrors image formation, ray. Curvedspherical mirror a curved mirror is a mirror with a curved reflecting surface. Reflect on the terminology used when referring to concave and convex mirrors and the images they form. A spherical mirror is a part of a spherical reflecting surface. Concave mirror converging lens f 0 s 2f f 2f real inverted enlarged s 0 s concave shaving mirror has a focal length of 33 cm. No matter how far you stand from a mirror, your image appears erect and smaller than you.
A convex spherical mirror has the silvered surface of the mirror on the outer, or convex, side of the curve. Ray hits the vertex of mirror 1 and reflects with same angle. Will this lens produce a complete image of the object. Oct 23, 2019 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. A concave mirror, or converging mirror, has a reflecting surface that is recessed inward away from the incident light. Convex mirror problems and solutions solved problems. A mirror that bulges outwards is called a convex mirror. There will be a window having two buttons named concave mirror and convex mirror. In case of convex mirror, parallel rays are diverged from the mirror after reflection and appear to come from a virtual focal. The surface may be either convex bulging outward or concave bulging inward. Students must then look back and make associations with image formation based upon type of mirror and the location of the object relative to the center of curvature and focal length. Read about properties of convex mirror and concave mirror at.
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. One mark questions convex mirror for seeing traffic at. This is because the rays of light falling parallel once reflected diverge. Two concave mirrors are placed on same principal axis. Also from our rule for s, we observe this is negative in the above drawing. One mark questions convex mirror for seeing traffic at the. The focal length of a convex mirror is 10 cm and the object distance is 20 cm. A 10 mm long awl pin is placed vertically in front of a concave mirror. An image which can be formed on the screen is known as real image and the one which cannot be formed on screen is known as a virtual image. Explore more about concave mirror ray diagram, convex mirror ray diagram and much more at. Image may be real or virtual depending on the position of the object. It is used in the aircraft landing to guide the airplanes, it is used as a torch to reflect the light rays, it is used during shaving to get an erect. If youre seeing this message, it means were having trouble.
Numericals based on convex and concave mirror gurukul. 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. Mirror diagrams can be confusing to students, but this foldable and bundled lesson will put all the information in one place and at their fingertips. Ray, coming from first mirror turns back with same path after reflecting from second mirror.
Determine a the image distance b the magnification of image. The main difference between concave and convex mirrors is the most easily seen. Background concave and convex mirrors are examples of spherical mirrors. A concave mirror has a radius of curvature of 24 cm. Unlike convex mirrors, concave mirrors show different image types depending on the distance between the object and the mirror. The concentrated beam of sunlight at a point increases the temperature at that point.
Move the tip of the object arrow or the point labeled focus. Description simulation of image formation in concave and convex mirrors. The image in the convex mirror is always a virtual image, standing like an object, and looks smaller than the real thing. Mirror formula with solved numericals class 10 teachoo. Whenever a light ray hits the interface between two tr ansparent materials, generally some of the. Science plane, concave and convex mirrors and reflection. If the object distance is greater than the focal length f then the concave mirror produces an inverted image. Applications and uses of concave mirror in daily life byjus.
1109 1090 376 1046 1629 1188 235 342 423 978 599 677 1228 743 542 1121 289 73 488 288 419 858 908 1261 1088 1256 325 792 1100 561 127 635 1139 1095 206 1063 39 1066 253 1405 1008