a. Define refraction and write the snell's law. What is the cause of refraction
Answers
Explanation:
Refraction is the bending of a wave when it passes from one medium to another. The bending is caused due to the differences in density between the two substances.
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.
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 the sine of the angle of incidence to the sine of the angle of refraction is a constant. This is also known as Snell’s law of refraction.sinisinr=constant
Answer:
refraction:
Refraction is the bending of a wave when it passes from one medium to another. The bending is caused due to the differences in density between the two substances. Hence, we can define. Refraction is the change in the direction of a wave passing from one medium to another.
Snell’s Law:
It gives the amount of bending of light rays. It also determines the relationship between the angle of incidence, the angle of refraction and relative indices of a given pair of media. It is the ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant for the light of given color and for the given pair of media.
causes of refraction:
The cause of refraction of light is that light travels with different speeds in different media. This Change in the speed of light when it moves from one medium to another causes it to bend.