There can be only one reflected ray for a given single incident ray falling on a plane mirror. The reflected ray always goes away from the mirror. The reflected ray tells us the direction in which the light goes after reflection from the mirror. The ray of light which is sent back by the mirror is called the reflected ray. (3) When the incident ray falls on a mirror, the mirror sends it back in another direction. The point of incidence tells us where exactly light falls on the mirror surface. (2) The point at which the incident ray strikes the mirror is called the point of incidence. The incident ray always goes towards the mirror. The incident ray tells us the direction in which the light from a source falls on the mirror. (1) The ray of light which falls on the mirror surface is called incident ray. The ray-box is also ray streak apparatus. The thin beam of light produced by a ray-box is visible on a white sheet of paper, so its path on paper can be traced by using a pencil. This narrow beam of light is then used to study the reflection of light from a plane mirror. When the light bulb is switched on, a very thin beam of light (or a narrow beam of light) comes out of the narrow slit of the ray-box. A ray-box has a light bulb inside it and there is a narrow slit in front of the box. In order to study the reflection of light, we need an apparatus which can produce a thin beam of light. We use an apparatus called ray-box to 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.Ī plane mirror reflects almost all the light which falls on it. The non-luminous objects are also called illuminated objects (because they get illuminated or lighted up by the light of luminous objects falling on them). We can see a book because the sunlight (bulb-light or tube-light) falling on it is reflected by the book into our eyes. We can see the moon because moon reflects light (received from the sun) into our eyes. The moon is a non-luminous object which does not have its own light. And when this reflected light enters our eyes, we can see the non-luminous object. This light is reflected by the non-luminous object in all directions. The non-luminous objects can be seen only when light coming from a luminous object falls on them. The objects which do not emit their own light are called non-luminous objects. They cannot produce light, therefore, they cannot emit their own light.įor example: The moon, earth, planets, table, chair, book, trees, plants, flowers, human beings, fan, bed, mirror, diamond, walls, floor, roads etc. We can see the sun because the light given out by sun enters our eyes. The sun, stars, electric bulb, glowing tube-light, torch, fire, and flame of a burning candle, are all luminous objects. They produce their own light and then emit this light. The luminous objects are the sources of light. The objects which emit their own light are called luminous objects. There are two types of objects: (1) Luminous Objects (2) Non-luminous Objects Luminous Objects and Non-Luminous Objects 4.2 Diffuse Reflection or irregular Reflection.4 Regular Reflection and Diffuse Reflection of Light.1 Luminous Objects and Non-Luminous Objects.There are two essential laws of reflection, according to which the angle of incidence and the angle of reflection made by the light wave on the smooth reflecting surface are equal. The reflection of a light wave follows some set of rules known as the Laws of Reflection. Reflection is produced by all the waves namely, Light waves, Electromagnetic waves, Sound waves, and waves that form on the water’s surface. Light from our incident on the plane mirror gets reflected and so we are able to see our virtual image on the mirror. It is due to the reflection of light we are able to see ourselves in the Plane mirror. Reflection or Reflection of light is the process of bouncing back light rays when it strikes the smooth and shiny reflecting surface. ISRO CS Syllabus for Scientist/Engineer Exam.ISRO CS Original Papers and Official Keys.GATE CS Original Papers and Official Keys.DevOps Engineering - Planning to Production.Python Backend Development with Django(Live).Android App Development with Kotlin(Live).Full Stack Development with React & Node JS(Live).Java Programming - Beginner to Advanced.Data Structure & Algorithm-Self Paced(C++/JAVA).Data Structures & Algorithms in JavaScript.Data Structure & Algorithm Classes (Live).
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