A curved mirror is a mirror with a curved reflecting surface. Snc 2d light and geometric optics convex mirrors extra practice worksheet a draw a ray diagram for each to locate the image. Description simulation of image formation in concave and convex mirrors. Numericals based on convex and concave mirror gurukul. Where will the image form if the same object is placed 15 cm in front of a convex mirror with a focal length of 18 cm.
The image that is formed by the concave mirror is not virtual. Concave and convex mirrors worksheet teaching resources. 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. R 1 l r 2 3l2 this is where the waist would be, if the. Lens in a washer lab using convex and concave lens. The practical activity linear parabolic solar reflectors shows students how to build the. A real image is formed when light rays converge to form the image. On the other hand, a convex lens is thicker in the middle and thinner at the edges.
In a plane mirror the image is the same size as the object and the same way up. 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. For plane mirrors, the object distance equals the image distance and all images are erect and virtual. Students will have fun learning about how convex and concave lens work. Concave mirrors are silvered on the inside of the sphere and convex mirrors are silvered on the outside of the sphere. Concave and convex are also two types of spherical mirrors.
Concave mirrors and convex mirrors image formation, ray diagram. Image formed by a plane mirror, image of an extended object, image of a distant object, paraxial rays, focal length. Concave and convex mirrors a fun investigation teaching. A convex lens is known as a converging lens, whereas a concave lens is also known as a diverging lens. The most common nonspherical type are parabolic reflectors, found in optical devices such as reflecting telescopes that need. The terms concave and convex are from the perspective of the object. Images formed by concave mirror, can be smaller, equal to or larger than the size of the object. Concave mirror convex mirror image formation by concave mirror concave mirror ray diagram image formation by convex mirror. Below you will find the home work assignment for cbse class 10 light reflection and refraction. When an object is farther from a concave mirror than twice the focal length, the image that is formed is real, smaller, and. The worksheets come in two flavors with equations and without.
Three types of mirrors are plane mirrors, concave mirrors and convex mirrors. Discover concave and convex mirrors using a laser light. 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. If object is placed closer to mirror than focal point, reflected light rays diverge. A convex mirror can only produce a virtual image since all reflected rays will diverge. We will employ the convention that refers to the radius of curvature of the surface through which light will enter the lens, and. Thanks to the optical properties of convex mirrors, motorists have a buffer against all manner of dangers. 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.
To create a real image with a concave mirror, the object must be outside the focal point. A concave mirror is a mirror that is curved inward in the middle. Frankl your own mind is a sacred enclosure into which nothing harmful can enter except by your promotion. The expanded field of view results in the smallerthanreallife image you see hence the typical warning objects in mirror are closer than they appear. How are images formed in a concave and convex mirror. Free pdf download best collection of notes, important questions, sample papers and ncert solution for cbse class 10 science. Shedding light on curved mirrors liacos educational media. There are 4 worksheets dealing with concave and convex mirrors. Convexconverging f concavediverging drawing ray diagrams for convergingdiverging mirrors 1. With mirrors, the curved surface is referred to as either concave or convex depending upon whether the center of curvature occurs on the side of the reflecting surface or the opposite side. A convex mirror is a mirror that curves outward, like the outside of a spoon. Place the less curvy convex mirror the concave mirror in reverse about 10cm from the front of the light box and align it so that the central ray reflects back on itself. This is a great way to introduce curved mirrors to students, and have them investigate what they do for themselves.
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. Convex mirrors have reflective surfaces that curve outward. With a plane flat mirror, this gives the impression of an im. The focal length of the convex mirror in the mirror set is 20 cm. Difference between concave and convex concave vs convex. Convex mirrors focus light rays behind the surface of the mirror, or inside of it. The one basic principle is that light that hits a mirror reflects at the same angle with which it hits. Media in category curved mirrors the following 50 files are in this category, out of 50 total. If the object is 12 cm tall, what will be the height of the image. Find the focal length of a convex mirror of radius of curvature 1 m. Concave mirrors curved mirrors come in two basic forms concave. Convex mirrors curve outward creating a focal point behind the mirror.
A light bulb is 60 cm from a concave mirror with a focal length of 40 cm. All images formed from convex mirrors are erect, virtual, and diminished in. Concave mirrors and convex mirrors image formation, ray. Concave mirrors curve inward, creating a focal point in front of the mirror. Grade 8 science ray diagrams for concave mirrors the incident. Notes,whiteboard,whiteboard page,notebook software,notebook, pdf,smart,smart technologies ulc,smart board interactive whiteboard. Describe the relationship between collimated light and the focal points of convex and concave mirrors. Pdf the properties of real and virtual images formed by lenses and mirrors are. 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. Convex mirrors can be found indoors and out, on vehicles and in conjunction with security cameras. A concave mirror is a mirror that curves inward, like the inside of a spoon. Fun interactive lab for california life science standard 7.
Oct 04, 2017 11 questions to test on basic understanding of images formed in convex and concave mirrors. 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. Curved mirrors are roughly divided into two categories, concave and convex, terms that are also used to describe the geometry of simple thin lenses. Distinguish a concave spherical mirror from a convex spherical mirror and apply the relationships between the focal length f, object distance p, image distance i. 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. The lens is made of glass with index of refraction. 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.
Each mirror has a radius of curvature r which is in. In the case of convex mirror most of the images formed is virtual except when the object is placed at infinity, when a real image is formed. Difference between convex and concave mirror convex vs. Use the spherical mirror equation to calculate the expected distance for the virtual image. A mirror that bulges outwards is called a convex mirror. Because of their shape and focal point placement, images in concave mirrors appear upside down and far away. The plane mirror is a flat surface, where the object reflected has an image the same size. This activity leads students through a practical investigation to find out what concave and convex mirrors do to light rays. Strictly speaking, images arent formed in a mirror, theyre formed by a mirror. Grade 8 science ray diagrams for concave mirrors 1.
Figure 1 shows the three types of mirrors we will consider. The surface may be either convex bulging outward or concave bulging inward. Curvedspherical mirror a curved mirror is a mirror with a curved reflecting surface. Compare plane mirrors, concave mirrors, and convex mirrors. Concave and convex mirrors and lenses lesson 4 grade 8 science module 4, lesson 4 33 optical device u2022 lens u2022 convex lens u2022 converges u2022 focal point u2022 concave lens u2022 plano u2022 focal length filename. Pdf optical images due to lenses and mirrors researchgate. Ray tracing and focal lengths pdf shedding light on curved mirrors teacher notes pdf the following 4 files relate to bonus feature 1 solar reflectors, which in fact can also be viewed by clicking the link. A mirror is a surface which reflects a clear image.
They also have different properties of reflection and production of image. Move the arrow to the right side of the mirror to get a convex mirror. If a concave mirror is thought of as being a slice of a. Quiz on mirrors ian upright object is located in front of a convex mirror a distance greater than the focal length. For converging mirrors and diverging mirrors, the focal length is equal to onehalf the radius. However, when you move closer, the object enlarges. For those who dont know lost is location orientation size and type for example. In the sign convention used for spherical mirrors, both the focal length of a convex mirror and the image distance for a virtual image have negative values.
Scholars experiment with real and virtual images before reading a handout and completing homework questions. A convexconvex lens has radii of curvature with magnitudes of and. Convex and concave lesson plans grade 4 free pdf file. This video shows how to use a ray box to record what happens to light when it bounces off convex and concave mirrors. All images formed from convex mirrors are erect, virtual, and diminished in size. Lensmakers equation for a lens in air, then a lens in water. Convex mirrors surface of mirror is curved outward spreads out light rays also known as diverging mirror produces a virtual image that is upright and smaller than.
The surface may be either convex bulging outward or concave recessed inward. 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. Light traveling parallel to the principal axis pa will. There are two types of curved mirror convex and concave. Concave and convex are two classes of spherical mirrors. Curved mirrors concave converging mirror convex diverging mirror 36. Describe what is meant by gaussian or paraxial optics. Replace the convex mirror with the concave one and move it to the end of the track. But images formed by convex mirror is always smaller than the object. Determine the relationship between object distance, image distance, focal length, and. All of them are segments of spheres centered on a horizontal axis. Move the tip of the object arrow or the point labeled focus. Observer would see a virtual image located somewhere behind the mirror because the light appears to originate from that point. Common design for highpower lasers where small spots could damage mirrors.
If you can use the same format i did ill give 5 stars. 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. Jan 24, 20 for those who dont know lost is location orientation size and type for example. Ray 1 passes through the center of curvature c of the concave mir ror, or is on a path toward the center of curvature of the convex mirror. Grade 8 science ray diagrams for concave mirrors the. Most curved mirrors have surfaces that are shaped like part of a sphere, but other shapes are sometimes used in optical devices. The image formed by the spherical mirror can be either real or virtual. 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. Where will an image form if an object is placed 58 cm from the mirror. Explore how mirror characteristics and the position of the object affect the appearance, orientation, and size of virtual images produced by concave and convex mirrors. Included extensions greatly benefit learners, so take advantage of the. Curved mirrors concave and convex linkedin slideshare.
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