What is the difference between regular and irregular reflection ?

Regular reflection
1) After reflection rays are parallel.
2) It obeys law of reflection
3) Surface used for reflection is smooth.
Irregular Reflection
1) After the reflection rays are not parallel.
2) It does not obey law of reflection.
3) Surface used for reflection is rough.

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Regular reflection  : it is when parallel rays of light fall on a smooth surface and reflect parallely.
Irregular reflection :  it is when parallel rays of light fall on a rough surface and reflect in different directions.
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the difference between regular and irregular reflection is
  • when light falls on a regular or polished surface ,the rays get reflected back and they are parallel to  each other.
  • when light falls on an irregular  or diffused surface ,the rays are reflected back but they are not parallel to each other.
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