Hi Sushant,
This is the screen shot that I have taken after making tab visible. That means last tab "Note" is hidden here. Now the question was I wanted to bring this "Note" tab back as original view. As you said I tried already both ways and it was not working. But finally I found what was happening for not able to bringing back is in "Tab Caching enabled" visible field was deactivated. After activated this field I am able to get back this tab. 