Choosing to appear for the UGC NET in two different subjects is a brave thought my friend, and I would like to tell you that it’s entirely possible to do so. However unlikely it might sound, there are people that appear for the NET in two different subjects and are also able to ace in them both.
If you are one of them and really want to appear for the same, make sure that you have the required master’s degrees or their equivalents with a minimum passing marks of 55% in both subjects. Also, make sure that the subjects are listed under the UGC NET subjects list.