Ray Optics And Optical Instrument Flashcards
(12 cards)
What is optics?
Optics is a branch of physics which deals with the study of nature, properties, and effects of light.
What is the speed of light in vacuum?
The speed of light in vacuum is 2.99792 x 10^8 m/s, the highest speed attainable in nature.
What is the path of light called?
The path of light is called a ray.
What constitutes a beam of light?
A bundle of rays constitutes a beam of light.
What is the process called when light bounces back after striking a surface?
The process is called reflection.
What is the angle of reflection?
The angle of reflection is equal to the angle of incidence.
What lies in the same plane during reflection?
The incident ray, reflected ray, and the normal to the reflecting surface at the point of incidence lie in the same plane.
What is the pole (P) in spherical mirrors?
The pole (P) is the geometric center of a mirror.
What is the principal axis in spherical mirrors?
The principal axis is the line joining the center of curvature and pole of a spherical mirror.
All distances are measured from the________ of the mirror
Pole
The distance measured in the same direction as the incident light are taken as_______
Positive
The direction which are measured opposite to the direction of incident light are taken as _________
Negative
