Which causes an object to become invisible, regular or diffused?

[pmostafa]

When an object becomes invisible when it undergoes “regular” or “diffused” reflection?

 

[sophiecentaur]

There are many reasons for an object to become "invisible".
What was the context of your question?

 

[pmostafa]

I would like to know object undergoes invisible for which reflection, Regular or Diffused.

 

[berkeman]

I would like to know object undergoes invisible for which reflection, Regular or Diffused.

Your question is not translating very well. Can you provide a web pointer to an example of the kind of "invisibility" you are asking about?