Best way and best tool to file sch. 40 PVC
The a deburring tool made for plastic pipe is money well spent if you'll use it enough.  But the same tools that make sense for a professional don't necessarily make sense for a DIYer.  If you're doing it yourself to save money, you can very quickly lose the savings buying tools you'll probably use once or twice.  I think a plastic pipe deburring tool that will handle your 2&quot; pipe is going to be a few bucks.
You can deburr the pipe adequately with a utility knife.  It's not fast and you have to be careful not to cut yourself or gouge up the pipe, but it can be done.  I think everyone does it when that's what's on hand, it's not worth a trip to the truck or the shop for the special tool.
There are some inexpensive options that are worth having and won't break the bank.  A simple deburring tool is never a bad addition to your tools and under $10USD:

This type of deburring tool works on both the inside and the outside, it's not real fast but faster than a knife.  It doesn't take up much space, you can put it in a shirt pocket.  It will also work on metal pipe and many other situations where you want to round off the sharp edge where you cut metal.
You can certainly get it done with a file.  Most any file will work, but a rounded one will work much better on the inside of the pipe.  If you're buying one for the task, it's nice to buy something versatile so you're more likely to get other use out of it in the future.  The most versatile file has to be the four-in-hand type, which has a flat file, rounded file, flat rasp, and rounded rasp in one tool.  Of course for reaming the inside of the pipe you'll use the rounded file, the outside, the flat file.  These are also available under $10USD.

As for angles of chamfer etc., don't sweat it.  You're not machining the barrel of field artillery, it's a plastic pipe.  About 45 degrees, take off just enough to remove the plastic shavings and make it easy to assemble the joint.  If you want to be precise about anything, better to focus on nice square cuts.