With the help of a diagram, explain the difference between reflection from a rough surface and reflection from a smooth surface.

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Solution

Reflection from a rough surface
When a parallel beam of light rays fall on a rough surface, the rays will reflect in different directions. This type of reflection is known as irregular or diffused reflection.

Reflection from a smooth surface
When a parallel beam of light rays fall on a plane and smooth surface, the reflected rays are parallel. This type of reflection is known as regular reflection.

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