For example, a flat mirror produces an image that is upright, and of the same size as the object that is being reflects. These angles are the same even when multiple rays hit the surface and bounce back. For example, when a ray of light strikes a horizontal surface at a 45 degree angle (angle of incidence), it always rebounds at the same 45 degree angle (angle of reflection). The angle of incidence and angle of reflection are the same in the case of reflection. The images that are witnessed through the glass/see-through objects are a result of refraction. Here, the light changes direction, or ‘bends’ as it passes through the boundary between these two media. There’s another phenomenon called refraction. The light beam that leaves the surface is called the reflected ray. The light beam that hits the surface is called incident ray. To put it simply, the mirror images are what are called reflection generally. NCERT Exemplar Solutions for All SubjectsThe phenomenon of a light beam rebounding after hitting a surface is called reflection.NCERT Exemplar Class 12th Physics Solutions.NCERT Exemplar Class 11th Physics Solutions.Some examples where refraction takes place are prisms, glass slabs, water, Glass of water with a spoon in it, Oil in a glass bottle, Lens, etc. Some examples where reflection takes place are plane mirror, rear view mirrors, astronomical reflecting telescope, microscopes, etc. The second law states that the incident ray, the refracted ray and normal ray at the interface of any two given mediums, all lie in the same plane. According to the first law of refraction, the ratio of the sine of the angle of incidence and the sine of the angle of refraction is constant in any two given mediums.Ģ. NCERT notes Class 12 Physics Chapter 9 Ray Optics and Optical Instrumentsġ.NCERT Exemplar Class 12 Physics Solutions Chapter 9 Ray Optics and Optical Instruments.NCERT solutions for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments.It occurs when the beam of light falls on the rough surface and reflects light in different directions. Irregular reflection:- It is also known as diffused reflection. It occurs when a beam of light falls on a smooth, regular and polished surface. Regular reflection:- It is also known as specular reflection. The ray of incidence, the ray of reflection, and the normal drawn at the point of incidence, to the mirror, occurs on the same plane.The angle of incidence is equal to the angle of reflection.Refraction and Dispersion of Light through a Prism.Now, as we have discussed the difference between reflection and refraction, let us discuss more about reflection and refraction. ![]() The angle of incidence and refraction are different. The angle of incidence and reflection are the same. The medium of propagation of light gets changed. The medium of propagation of light remains the same. The speed of light is changed from one medium to another. Here, the light ray passes from one medium to another. Here, the light ray bounces back in the same direction. regular reflection and diffused reflection. It takes place in the transparent surface that allows the bending of light rays to a different medium. It takes place on shiny surfaces that allow bouncing back of light without passing through it. Refraction is considered as the bending of rays of light when it travels from one medium to another medium. Reflection is considered as the bouncing back of light when it falls on a surface. The Difference between Reflection and Refraction are mentioned below:. A smooth sheet of metal reflects most of the light rays because the light can’t enter the metal, but on the contrary a piece of glass refracts the light because some of the light goes through the surface.ĭifference between Reflection and Refraction in a tabular form Refraction takes place when the path that the light travels bends as it goes from one material into another. Reflection, which is light bouncing off a surface and can be compared much like a ball bouncing off the floor or a wall, is the simplest process for changing the direction that light travels in. Refraction tells us about the bending of the path of the light as the light passes from one material to another. Reflection describes light bouncing off a surface. Two important phenomena in geometrical optics are reflection and refraction. Differentiate between reflection and refraction
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