The phenomenon of bouncing back of light from a surface is known as the reflection of light. This chapter explains to draw the figure of the images formed by mirrors, their uses, magnification etc. Hence a mirror changes the direction of light that falls upon it. to the mirror at the point of incidence and the reflected ray, all lie in. When light strikes a surface and bounces back, it is called reflection. For example - Spoon } ® The curved surface of shinning spoon can be considered as curved mirror. Reflection of light by spherical MirrorsMirrors, whose reflecting surface are curved inward or outward spherically are called spherical mirror. An object is placed in front of a concave mirror of focal length 30 cm. Angle of incidence is equal to angle of reflection. 5) Reflection by spherical mirrors :-. In the diagram given above, the ray of light that approaches the mirror is the “Incident Ray”. Spherical mirrors Laws of Reflection. Spherical mirrors Spherical mirror is a curved mirror which is a part of a hollow sphere. Class 10 Physics Light Reflection Refraction. Spherical mirrors. Spherical mirrors. Mirrors, whose reflecting surfaces are spherical, are called spherical mirrors. The reflecting surface of such mirrors can be considered to form a part of the surface of a sphere. (b) always forms a virtual image. REFLECTION OF LIGHT. The laws of reflection What is the reflection of light? Light exhibits dual nature i.e. Two kinds of spherical mirrors are concave and convex. Reflection of light by Spherical Mirrors. A spherical mirror, whose reflecting surface is curved inwards, i.e. Mirror images with their attributes: R, C, f, P, and Principal axis. 5. Reflection. (ii) When light falls on an object, some part of light is reflected back to our eyes. A spherical mirror, whose reflecting surface is curved outwards, is called a convex mirror. This will clear students doubts about any question and improve application skills while preparing for board exams. If the surface is smooth and shiny, the light will reflect at the same angle as it hit the surface. The diameter of the reflecting surface of spherical mirror is called its aperture. Light - Class 8: Notes. Reflection of light is the bouncing back off a ray of light when it strikes a boundary between different media through which it cannot pass. (i) Angle of incidence is equal to the angle of reflection. It travels with a speed of 3 x 10 8 m/s in vacuum. A Ray of light passing through the centre of curvature of a concave mirror is incident on its reflecting surface . Laws of Reflection. Reflected ray - The ray of the light that gets reflected back from the surface is called reflected … We follow the rules of light reflection and refraction for class 10 notes. Laws of Reflection :- The angle of reflection is equal to the angle of incidence (angle between incident ray and the normal). In order to study the reflection of light, we need an apparatus which can produce a thin beam of light. The process of sending back light rays which fall on the surface of an object, is called reflection of light. Light plays an important role in our life. 1. Light Reflection and Refraction Class 10 Notes Understanding the Lesson. These are :-. The surface, then, has a circular outline. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Radius Of Curvature:The radius of sphere; of which the reflecting surface of a spherical mirror … Pole : The centre of the spherical surface of […] Kerala State Syllabus 8th Standard Basic Science Solutions Chapter 18 Reflection of Light in Spherical Mirrors. Mirrors, whose reflecting surfaces are spherical, are called spherical mirrors. A plane mirror reflects almost all the light which falls on it. straight line propagation (Light wave travel from one point to another, along a straight line). From long time ago man has tried to study about light. The angle of incidence and angle of reflection is equal. A concave mirror is used to convert solar energy into heat energy, in torches and car's headlights to reflect the light of the bulb to form a powerful beam of light, in an astronomical telescope to view stars and planets. If you have any query regarding NCERT Class 10 Science Notes Chapter 10 Light Reflection and Refraction, drop a … 1. → When light falls on a surface, following may happen: (i) Reflection. The first mirrors used by humans were most likely pools of water. We now define a few important terms used for spherical mirrors. When a ray of light falls on such smooth or shiny object light from the object bounces back those rays of light to our eyes and this phenomenon is Reflection of Light. When a light travels from a point and strikes a reflecting surface making an angle with the normal which is perpendicular to the surface, then the light gets reflected at the same angle that it formed with the normal. In this mirror, parallel rays of light converge at a point after reflection. Types of Spherical Mirrors [Image will be Uploaded Soon] Concave mirror: Outer surface: silvery polished, inner surface: reflective. The process of sending back the light rays which falls on the surface of an object – Reflection The object having polished , shining surface reflects more light than object having unpolished, dull surface Silver metal is good reflector of light. Figure; Consider a ray of light AB, parallel to the principal axis, incident on a spherical mirror at point B. Uses of Concave mirror 3. Light – Reflection and Refraction Notes Properties of Convex Mirror: Reflecting surface is curved outwards Diverging mirror (a) concave mirror (b) convex mirror Common Terms for Spherical Mirrors Principal axis - the line joining pole and the centre of curvature Pole (P) - the centre of the spherical mirror The Angle of Incidence is always equal to Angle of Reflection Principal focus (F) is the point on the principal axis, where a parallel beam of light, parallel to the principal axis after reflection converges in the case of a concave mirror and appears to diverge from in the case of a convex mirror. Reflection of light: When light gets incident on any surface and changes its direction to the same medium then this phenomenon is called reflection of light. Physics Question Papers for Class 12 on “Reflection of Light by Spherical Mirrors”. In Fig.10.2, distance MN represents the … SUBMITTED BY MUBASHIRA M. 2. The Centre of curvature of the concave mirror is the centre of the sphere of which the concave mirror is a part. 10. 1. The reflecting surface of such mirrors can be considered to form a part of the surface of a sphere. Write laws of reflection in a place mirror. These laws of reflection are applicable to all types of reflecting surface including spherical surfaces. In figure PQ is a plain mirror and O is an object. Incident rays OA and OC are coming from the object. These incident rays are reflected from the mirror and reflected rays emerge as AB and CD. Selina Concise Physics Class 9 ICSE Solutions Reflection of Light. In this convention, ... these notes are very useful to all the class 10th students these are very helping for those students who takes these notes intrusting and difficult for those who do not takes intrust in these notes. What is the general value of magnification in lens and mirror. The concave mirror is a spherical mirror whose reflection surface is a section of an inner surface of a hollow sphere. (iii) Absorption. Aperture. Class 10 Physics Sign Convention for Spherical Mirror. Important terms. (see the pic 10.2) These laws of reflection are applicable also for spherical surface. The angle of incidence is equal to the angle of reflection, i.e ⦟i=⦟r and. . This reflected light, when received by … A highly polished surface, such as a mirror, reflects most of the light falling on it. Reflection of Light. In diagram AB is the aperture of the mirror. Laws of Reflection of light. Good mirrors reflect about 90 percent of the incident light and absorb the rest. If the light is reflected the angle of the reflected ray will be equal to the angle of the incident ray. If the ray is transmitted into the new medium the ray may be bent or refracted. We will focus on reflection this chapter and on refraction next chapter. (ii) Refraction. Reflection of Light from Spherical Mirror Introduction : There are two types of spherical mirrors: Concave mirror : Convex mirror : Some terms associated with spherical mirrors. Chapter 18 Reflection of Light in Spherical Mirrors; Chapter 19 Sound; Chapter 20 Static Electricity; We hope the given Kerala Syllabus 8th Standard Basic Science Solutions Guide Pdf Free Download in both English Medium and Malayalam Medium of Chapter wise Questions and Answers, Notes will help you. → Bouncing back of light when it strikes on a polished surface like mirror. In this chapter we will study the phenomena of reflection and refraction using the property of light i.e. Reflection of Light - Spherical Mirrors Question Papers Revision Notes Take Quizzes Solve Worksheets Select a Chapter from the menu to view the specific chapter