what is refraction of light? pls elaborate
Answers
Explanation:
Refraction is the bending of a wave when it enters a medium where its speed is different. The refraction of light when it passes from a fast medium to a slow medium bends thelight ray toward the normal to the boundary between the two media. ...Refraction is responsible for image formation by lenses and the eye.
Explanation:
Refraction is the bending of a wave when it enters a medium where its speed is different. We can define it as:
Refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium
Refraction of light is one of the most usually observed phenomena which includes refraction of light through prism, but other waves like sound waves and water waves also experience refraction.
Laws of Refraction of Light
Laws of refraction state that:
The incident ray, refracted ray, and the normal to the interface of two media at the point of incidence all lie on the same plane.
The ratio of sine of angle of incidence to the sine of angle of refraction is a constant. This is also known as Snell’s law of refraction.
=sini/sinr = constant
Causes of Refraction
The cause of refraction of light is as follows:
The frequency of the refracted ray remains constant.
Due to partial reflection and absorption of light at the interface, the intensity of the refracted ray will be less than the incident ray.
When the light crosses the boundary between two different media, deviation of light occurs resulting in refraction such that there is a change in wavelength and speed of light.
Effects of Refraction
Twinkling of stars is due to refraction of light.
Mirage and looming are optical illusions which are a result of refraction of light.
A swimming pool always looks shallower than it really is because the light coming from the bottom of the pool bends at the surface due to refraction of light.