Mirrors Relfect Light Flashcards
What is the normal in relation to a mirror?
A line drawn perpendicular to the mirror’s surface at the point where the light ray and the reflecting surface meet.
What is the angle of incidence?
The angle between the arriving ray of light and the normal of the reflecting surface.
What is the angle of reflection?
The angle between the reflected ray of light and the normal of the reflecting surface.
What does the law of reflection state?
The angle of incidence is always the same as the angle of reflection.
What is a real image?
An image that consists of converging light rays.
What is a virtual image?
An image that consists of the converging extensions of light rays.
What is a plane mirror?
A flat reflecting surface.
What is the optical axis?
An imagined straight line that divides a mirror or a surface into two identical halves.
What is a convex mirror?
A curved mirror that produces a reduced virtual image.
What is a concave mirror?
A curved mirror that produces a magnified, reversed real image.
What is the light ray model?
A model that depicts the movement of light as a straight line.
What is an extension of a ray?
An extension of a ray is not a real light ray; it continues traveling in the same direction although the actual light ray has reflected or refracted.
What is the focus in optics?
The point at which reflected or refracted light rays converge.
What is the centre of curvature?
The centre of the imagined circle, the curvature of which a curved mirror is a segment.
What is a virtual focus?
A point at which the extensions of light rays converge.
