Light : Reflection & Refraction - PPT, Class 10 Science

 Page 1


* CHAPTER - 10
LIGHT : REFLECTION AND 
REFRACTION 
MADE BY-: 
 RAHAT 
Page 2


* CHAPTER - 10
LIGHT : REFLECTION AND 
REFRACTION 
MADE BY-: 
 RAHAT 
  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. 
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* 1) Light :- 
Page 3


* CHAPTER - 10
LIGHT : REFLECTION AND 
REFRACTION 
MADE BY-: 
 RAHAT 
  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. 
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* 1) Light :- 
© Galaxysite.weebly.com - All Rights Reserved 
Page 4


* CHAPTER - 10
LIGHT : REFLECTION AND 
REFRACTION 
MADE BY-: 
 RAHAT 
  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. 
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* 1) Light :- 
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      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. 
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* 2a) Reflection of light :- 
Page 5


* CHAPTER - 10
LIGHT : REFLECTION AND 
REFRACTION 
MADE BY-: 
 RAHAT 
  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. 
© Galaxysite.weebly.com - All Rights Reserved 
* 1) Light :- 
© Galaxysite.weebly.com - All Rights Reserved 
      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. 
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* 2a) Reflection of light :- 
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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.