1. What is reflection of light?
Reflection of light is the process by which light rays bounce off a surface and change direction. When light encounters a surface, it can either be absorbed, transmitted through the material, or reflected.

2. What are the laws of reflection?
The laws of reflection state the following:
- The incident ray, the normal to the surface at the point of incidence, and the reflected ray all lie in the same plane.
- The angle of incidence is equal to the angle of reflection.

3. How does reflection occur?
When light strikes a smooth surface, the incident ray (incoming light ray) and the reflected ray (outgoing light ray) are at the same angle with respect to the normal (a line perpendicular to the surface). This causes the reflection of light.

4. What is the difference between regular and diffuse reflection?
Regular reflection occurs when light rays strike a smooth surface and reflect in a predictable manner, like a mirror. Diffuse reflection, on the other hand, occurs when light rays strike a rough or uneven surface, causing the light to scatter in different directions.



1. What is refraction of light?
Refraction of light is the bending of light rays as they pass from one medium to another, due to the change in their speed. This bending occurs because light travels at different speeds in different mediums.

2. What is the cause of refraction?
Refraction occurs due to the change in speed of light when it passes from one medium to another. This change in speed is caused by the change in the density of the medium the light is entering.

3. What are the laws of refraction?
The laws of refraction state the following:
- The incident ray, the refracted ray, and the normal to the surface of separation at the point of incidence, all lie in the same plane.
- The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant, known as the refractive index.

4. How does refraction affect the direction of light?
When light passes from a less dense medium to a more dense medium, it bends towards the normal. Conversely, when light passes from a more dense medium to a less dense medium, it bends away from the normal.

Overall, understanding the concepts of light reflection and refraction is essential in comprehending how light interacts with different surfaces and mediums, and how it influences our perception of the world around us.