Question

Two pathline can __________

(a) intersect each other

(b) cannot intersect each other

(c) can meet at infinity

(d) cannot meet ever

The question was asked by my school principal while I was bunking the class.

I need to ask this question from Uniform Flow topic in division Inviscid & Incompressible Flow of Aerodynamics

Answer 1

Correct option is (a) intersect each other

To explain: Two pathlines can intersect each other because the same particle or the different particle may come again at the same place at different time. Moreover, pathline is just a path followed by the fluid particle. Two or more fluid particles can follow the same path.