PPT: Chapter 10 - Light - Reflection and Refraction, Class 10, Science PDF Download

 Page 1


CHAPTER - 10
LIGHT : REFLECTION AND 
REFRACTION
CLASS :- X 
MADE BY :- MANAS MAHAJAN
SCHOOL :- K.V. GANESHKHIND PUNE-7
Page 2


CHAPTER - 10
LIGHT : REFLECTION AND 
REFRACTION
CLASS :- X 
MADE BY :- MANAS MAHAJAN
SCHOOL :- K.V. GANESHKHIND PUNE-7
1) Light :-
i) Light is a form of energy which helps us to see objects.
ii) When light falls on objects, it reflects the light and when the 
reflected light reaches our eyes then we see the objects.
iii) Light travels in straight line.
iv) The common phenomena of light are formation of shadows, 
formation of images by mirrors and lenses, bending of light by a 
medium, twinkling of stars, formation of rainbow etc.
Page 3


CHAPTER - 10
LIGHT : REFLECTION AND 
REFRACTION
CLASS :- X 
MADE BY :- MANAS MAHAJAN
SCHOOL :- K.V. GANESHKHIND PUNE-7
1) Light :-
i) Light is a form of energy which helps us to see objects.
ii) When light falls on objects, it reflects the light and when the 
reflected light reaches our eyes then we see the objects.
iii) Light travels in straight line.
iv) The common phenomena of light are formation of shadows, 
formation of images by mirrors and lenses, bending of light by a 
medium, twinkling of stars, formation of rainbow etc.
Page 4


CHAPTER - 10
LIGHT : REFLECTION AND 
REFRACTION
CLASS :- X 
MADE BY :- MANAS MAHAJAN
SCHOOL :- K.V. GANESHKHIND PUNE-7
1) Light :-
i) Light is a form of energy which helps us to see objects.
ii) When light falls on objects, it reflects the light and when the 
reflected light reaches our eyes then we see the objects.
iii) Light travels in straight line.
iv) The common phenomena of light are formation of shadows, 
formation of images by mirrors and lenses, bending of light by a 
medium, twinkling of stars, formation of rainbow etc.
2a) Reflection of light :-
When light falls on a highly polished surface like a mirror most of 
the light is sent back into the same medium. This process is called 
reflection of light.
a) Laws of reflection of light :-
i) The angle of incidence is equal to the angle of reflection.
ii) The incident ray, the reflected ray and the normal to the mirror at 
the point of incidence all lie in the same plane.
Page 5


CHAPTER - 10
LIGHT : REFLECTION AND 
REFRACTION
CLASS :- X 
MADE BY :- MANAS MAHAJAN
SCHOOL :- K.V. GANESHKHIND PUNE-7
1) Light :-
i) Light is a form of energy which helps us to see objects.
ii) When light falls on objects, it reflects the light and when the 
reflected light reaches our eyes then we see the objects.
iii) Light travels in straight line.
iv) The common phenomena of light are formation of shadows, 
formation of images by mirrors and lenses, bending of light by a 
medium, twinkling of stars, formation of rainbow etc.
2a) Reflection of light :-
When light falls on a highly polished surface like a mirror most of 
the light is sent back into the same medium. This process is called 
reflection of light.
a) Laws of reflection of light :-
i) The angle of incidence is equal to the angle of reflection.
ii) The incident ray, the reflected ray and the normal to the mirror at 
the point of incidence all lie in the same plane.
c) Image formed by a plane mirror :-
i) The image is erect.
ii) The image is same size as the object.
iii) The image is at the same distance from the mirror as the object is in 
front of it.
iv) The image is virtual (cannot be obtained on a screen).
v) The image is laterally inverted.