15 Differentiate between reflection in a smooth surface and a rough surface with a suitable ray
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Explanation:
For a smooth surface, reflected light rays travel in the same direction. This is called specular reflection. For a rough surface, reflected light rays scatter in all directions.
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Smooth Surface
NATURE: lights rays in one direction and parallel.
IMAGE: The reflected image is very clear and sharp.
EXAMPLE: the light rays are incident on a polished smooth surface like plane mirror.
Rough Surface
NATURE: light rays in different directions.
IMAGE: There is no definite image formed.
EXAMPLE: light rays are incident on a surface like a wall, the wood, a leaf of a tree, a piece of leather, a piece of paper or a piece of wool, which are not smooth or polished.
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