What is refraction of light PDF?
refraction is defined as a change in the direction of a light waves as. they pass from one medium to another. in air, light travels slower. than in a vacuum, and even more slowly in water.as light travels. into another medium, the change in velocity bends light.
What is the reflection and refraction of light?
Reflection is the bouncing back of light when it strikes a smooth surface. Refraction is the bending of light rays when it travels from one medium to another. Generally occurs on shinny surfaces that only allow rebounding of light without permitting penetration through it.
What is reflection of light Class 10 Ncert?
Reflection of light is the phenomenon of bouncing back of light in the same medium on striking the surface of any object. The two laws of reflection are: (i) the incident ray, the reflected ray and the normal (at the point of incidence), all lie in the same plane.
What are the uses of reflection of light?
A microscope uses a mirror to reflect light to the specimen under the microscope. An astronomical reflecting telescope uses a large parabolic mirror to gather dim light from distant stars. A plane mirror is used to reflect the image to the eyepiece. Parabolic mirrors are used in torches and car headlamps as reflectors.
What are laws of reflection and refraction?
1- Incident ray, reflected ray and normal will lie in the same plane. 2- Angle of incidence will be equal to the angle of reflection. Laws of Refraction- 1- Incident ray, reflected ray and normal will lie in the same plane. 2- Refraction depends on the medium through which the light rays travel.
What do you mean by refraction of light?
Refraction is the bending of light (it also happens with sound, water and other waves) as it passes from one transparent substance into another. This bending by refraction makes it possible for us to have lenses, magnifying glasses, prisms and rainbows. Even our eyes depend upon this bending of light.
Do mirrors reflect or refract light?
At first glance, is sounds like a mirror reflects all light (except for a small amount of absorption), so there can be no refraction. However, many mirrors are a piece of glass with a reflective coating on the back surface.
What are the two types of reflections?
Two main types of reflection are often referred to – reflection-in-action and reflection-on-action.