What is reflection of light?
Reflection is when light hits a boundary and part of it returns to the original medium.
What type of surfaces can act as mirrors?
Any smooth surface.
What are the two types of mirrors?
Plane mirrors and curved mirrors.
How are modern mirrors made?
By depositing a thin film of aluminium on a polished surface.
Where can mirror coatings be placed?
On the front or back surface.
What is the function of mirrors?
To redirect light rays and form images.
What is regular (specular) reflection?
Reflection from a smooth surface where parallel rays remain parallel in one direction.
What is diffuse reflection?
Reflection from a rough surface where light is scattered in all directions.
Why is diffuse reflection important?
It allows us to see objects in everyday life.
Give an example of diffuse reflection in real life.
Car headlights reflecting off a rough road surface.
What is the incident ray?
The incoming ray that strikes a surface.
What is the reflected ray?
The ray that leaves the surface after reflection.
What is the point of incidence?
The point where the incident ray hits the surface.
What is the normal?
?A line perpendicular to the surface at the point of incidence.
What is the angle of incidence?
The angle between the incident ray and the normal.
What is the angle of reflection?
The angle between the reflected ray and the normal.
What is the first law of reflection?
The incident ray, reflected ray, and normal lie in the same plane.
What is the second law of reflection?
The angle of incidence equals the angle of reflection.
How is an image formed in a plane mirror?
Reflected rays appear to diverge from a point behind the mirror.
What is a virtual image?
An image formed where rays appear to come from, but do not actually meet.
What is the relationship between object and image distance?
they are equal
What is the position of the image in a plane mirror?
The same distance behind the mirror as the object is in front.
What is the size of the image?
Same as the object.
What is the nature of the image?
virtual
