Question

reflection vs refraction

Answer 1

The phenomenon of a light beam rebounding after hitting a surface is called reflection. To put it simply, the mirror images are what are called reflection generally. The light beam that hits the surface is called incident ray. The light beam that leaves the surface is called the reflected ray.
There’s another phenomenon called refraction. Here, the light changes direction, or ‘bends’ as it passes through the boundary between these two media. The images that are witnessed through the glass/see-through objects are a result of refraction.

The angle of incidence and angle of reflection are the same in the case of reflection. 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). These angles are the same even when multiple rays hit the surface and bounce back. For example, a flat mirror produces an image that is upright, and of the same size as the object that is being reflects. The length between the image and object from the mirror also remains the same. This type of reflection is called specular reflection. While most of the objects reflect light in all directions in a microscopic level, the irregularities on the object’s surface will determine the specific rate of reflection. When the light passes through a rough surface, the reflection also happens in different directions. This is called diffuse reflection.

Answer 2

The phenomenon of striking of light on a smooth surface nd returning back to the same medium called reflection of light.

Laws of reflection of light -
1. Incident ray, reflecting ray nd normal drawn at point of incidence, all lie at same plane.
2. Angle of incidence nd angle of reflection are always eqal.


A light ray travel in straight line in a homogeneous medium,bt when it travel from one transparent medium to other then it deviate from its path called refraction of light.

Laws-
1. Incident ray, refracted ray nd normal at the point of incidence, all lie in same plane.
2. The ratio of sin of incidence angle nd sine of refraction angle is constant for any two medium nd same colour of light. This is also called snell's law.