WHAT IS THE MEANING OF STREAM LINES AND ISOTHERMAL LINES ????
The system of confocal and coaxial parabolas y2 = 4a(x + a) is (A) (C) 26. self orthogonal stream lines (B) (D) orthogonal None oa: 4R00
the stream lines are out of syllabus. but you can visit
https://en.m.wikipedia.org/wiki/Streamlines,_streaklines,_and_pathlines
https://youtu.be/IYyECJmxfG0