Math Chapter Wise Statics And Dynamics English MCQ UPPSC Polytechnic Lecturer 2021(II) Q.If φ = A (x2 – y2) represents a possible flow phenomenon, then the stream function is- Aψ = Ax + C Bψ = 2Axy + C Cψ = A x y + C Dψ = Ax2 y2 + C Show answer Correct answer: ψ = 2Axy + C