Flashcards for JEE Physics - Ray Optics and Optical Instruments Class 12

 Page 1


Ray Optics and Optical Instruments
Flash cards
Page 2


Ray Optics and Optical Instruments
Flash cards
Definition of Reflection
When a light ray strikes the surface separating two media, a 
part of it gets reflected, i.e., returns back in the initial medium. 
It is known as reflection.
Page 3


Ray Optics and Optical Instruments
Flash cards
Definition of Reflection
When a light ray strikes the surface separating two media, a 
part of it gets reflected, i.e., returns back in the initial medium. 
It is known as reflection.
Some basic terms in ray optics
Ray 
A ray of light is the straight line which represent path of 
transfer of light energy. It is represented by a straight line with 
an arrow - head indicating the direction of propagation.
Page 4


Ray Optics and Optical Instruments
Flash cards
Definition of Reflection
When a light ray strikes the surface separating two media, a 
part of it gets reflected, i.e., returns back in the initial medium. 
It is known as reflection.
Some basic terms in ray optics
Ray 
A ray of light is the straight line which represent path of 
transfer of light energy. It is represented by a straight line with 
an arrow - head indicating the direction of propagation.
Mirror : 
It is a highly polished smooth surface from which most of 
the incident light gets reflected. It is represented by a line 
with hatches in the reverse side of the smooth surface.
Page 5


Ray Optics and Optical Instruments
Flash cards
Definition of Reflection
When a light ray strikes the surface separating two media, a 
part of it gets reflected, i.e., returns back in the initial medium. 
It is known as reflection.
Some basic terms in ray optics
Ray 
A ray of light is the straight line which represent path of 
transfer of light energy. It is represented by a straight line with 
an arrow - head indicating the direction of propagation.
Mirror : 
It is a highly polished smooth surface from which most of 
the incident light gets reflected. It is represented by a line 
with hatches in the reverse side of the smooth surface.
Object :
A. Point from which incident ray actually diverge is called real 
object. or point at which incident rays appear to converge is 
called virtual object.
B. object is defined on the basis of incident ray.
C. Minimum two rays are required to show the position of 
object