AP EAMCET Engineering 21 Apr 2019 Shift 1 Paper

Symbol l represents value of sub-shell and symbol n represent number of sub-shell and symbol m1 represent the value of orientation of the orbital.
Given that, n=3,l=1‌ and ‌m1=−1 It means an orbital is present in p -shell of 3rd shell and have orientation value -1
Therefore, only one orbital is possible for the given set of values of n,l, and m1