Light - Reflection and Refraction Flashcards
A diverging mirror is a:
Convex Mirror
A converging mirror is a:
Concave Mirror
What are spherical mirrors?
Mirrors, whose reflecting surfaces are spherical, are called spherical mirrors.
What is a concave mirror?
A spherical mirror, whose reflecting surface is curved inwards, is called a concave mirror.
What is a convex mirror?
A spherical mirror whose reflecting surface is curved outwards is called a convex mirror.
What is the Pole?
The centre of the reflecting surface of a spherical mirror is a point called the pole.
What is the Centre of Curvature?
The reflecting surface of a spherical mirror forms a part of a sphere. This sphere has a centre. This point is called the centre of curvature of the spherical mirror.
What is the Radius of Curvature?
The radius of the sphere of which the reflecting surface of a spherical mirror forms a part, is called the radius of curvature of the mirror.
What is Principal axis?
A straight line passing through the pole and the centre of curvature of a spherical mirror is called the principal axis.
What is Principal Focus of a Concave Mirror?
A number of rays parallel to the principal axis are falling on a concave mirror. They are all meeting/intersecting at a point on the principal axis of the mirror. This point is called the principal focus of the concave mirror.
What is Principal Focus of a Convex Mirror?
The reflected rays appear to come from a point on the principal axis. This point is called the principal focus of the convex mirror.
What is Focal Length?
The distance between the pole and the principal focus of a spherical mirror is called the focal length.
What is an Aperture?
The diameter of the reflecting surface of spherical mirror is called its aperture.
What is P?
Pole
What is C?
Centre Of Curvature
