what is refraction of light .i need long answer but not from Google
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Refraction of light is a phenomenon in which light due to different densities slightly appears to be bent.
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Heya !!!!
Here you go .....
The change in the path of a light ray while passing from one medium to another or the bending of light rays while travelling from one medium to another is called refraction.
When light travels from a rarer medium to a denser one, it bends towards the normal and when travels from a denser medium to a real one, it bends away from the normal.
Causes Of Refraction :
======================
Speed of light is different in different media. It is lesser in denser medium and hire in rarer medium. So, when light enters a denser medium, its speed reduces and it bends towards the normal and when it enters rarer medium, its speed increases and it bends away from the normal.
Everyday Examples of Refraction of Light :
====================================
1. The bottom of a tank or pond containing water appears to be raised due to refraction of light which takes place when light rays pass from the pool of water into the air.
2. The letters appear to be raised when viewed through a glass slab placed over the document because of refraction of light.
3. A pencil partially immersed in water appears to be bent because of the refraction of light coming from the part of pencil that is under water.
4. A lemon kept in water in a glass tumbler appears to be bigger than its actual size, when viewed from the sides.
Here you go .....
The change in the path of a light ray while passing from one medium to another or the bending of light rays while travelling from one medium to another is called refraction.
When light travels from a rarer medium to a denser one, it bends towards the normal and when travels from a denser medium to a real one, it bends away from the normal.
Causes Of Refraction :
======================
Speed of light is different in different media. It is lesser in denser medium and hire in rarer medium. So, when light enters a denser medium, its speed reduces and it bends towards the normal and when it enters rarer medium, its speed increases and it bends away from the normal.
Everyday Examples of Refraction of Light :
====================================
1. The bottom of a tank or pond containing water appears to be raised due to refraction of light which takes place when light rays pass from the pool of water into the air.
2. The letters appear to be raised when viewed through a glass slab placed over the document because of refraction of light.
3. A pencil partially immersed in water appears to be bent because of the refraction of light coming from the part of pencil that is under water.
4. A lemon kept in water in a glass tumbler appears to be bigger than its actual size, when viewed from the sides.
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