In my workflow I have master and a remote branch branch1. I branched out from branch1 and created branch2. I did my work in branch2 and branch1 carried on having more things commited by other devs. Once I was done I commited my changes to branch2 rebased my changes on top of branch1's latest commit. Git log in branch2 shows my commit on top of branch1's latest commit so all looks good there. However in branch1's git log my commits are not seen. Do I have to do a git push after I do a git rebase? If yes, then In this case, do I push to branch1 or branch2??
Your changes are not reflected in branch1 because they are not part of branch1.
In your case, branch2 comes after branch1, so you see both. But branch1 is therefore before branch2. From branch1's perspective, branch2 hasn't happened yet.
What you are seeing is correct. If you are using the master branch as your "live" or "final" branch, you could merge branch2 into master:
git checkout master && git merge branch2
This would bring your changes from both branches into master.
Also: The fact that branch1 is remote and branch2 is local doesn't really matter in this case. The commits themselves are in both places (because git is distributed). The "branches" are just names given to different commits to make it easy to manage them.