How can we see the reference file inside our repo after adding the file with git lfs?

I have pushed a file using git-lfs in github. After pushing it, I can only see .gitattribute file changed under my commit in github like this:

file_name filter=lfs diff=lfs merge=lfs -text 

There are couple of questions I want to ask:

1. Is .gitattribute file supposed to be ch开发者_如何转开发anged only? Git lfs stores the reference of the file inside our repo. That reference file should be added in our repo right? Why can't I see that reference file under my commit in github?

2. Actual file is pushed in a different server. From where exactly can we view it?

3.Now when my branch gets merged with master branch, can other team members be able to access that file simply by adding git pull origin master? Obviously after they have properly configured git LFS