What happens say if u got 2 posts with >10000 views. Do you get 2 famous question badges or 1? It is said: Question with 10,000 views. This badge can be awarded multiple times under the description.
When a badge's description says "This badge can be awarded multiple times", you will get one instance of that badge for each event that matches the criteria for which the badge is awarded. In this case, that means you get a Famous Question badge for each question you ask that has more than 10000 views.