Reflection Flashcards
The line joining the image to the object is
Perpendicular to the mirror
Angle of incidence
= angle of reflection
Angle of incidence
Light going in
Angle of reflection
Light bouncing off
The normal
A constructed line perpendicular to any reflecting surface at the point where the incident ray hits the surface.
The angle of incidence of a light ray at a plane mirror is always
Less than 90 degrees
The angle between the normal and the mirror is always
Equal to 90 degrees
The angle of incidence of a light ray at a plane mirror is always
Equal to the angle of reflection
A normal line is
At right angles to a surface
The nature of an image is defined by:
Whether it is upright or inverted
Its size relative to the object
Whether it is real or virtual
An image in a plane mirror is
Upright
Virtual
The same size as the object
Real image
Can be focused on a screen
Virtual image
Can’t be focused on screen- you have to look into the mirror to see it
The image
Reflection in plane mirror
Is the same distance behind the mirror as the object is in the front
And the same size as the object
And is virtual (it can not be projected onto a screen)
It is laterally inverted (wrong way round)
