The laboratory observation falling head test consist of measurements of ____________
(a) h1 at an interval of t1 and h2 at an interval of t2
(b) Only t1 and t2
(c) None of the mentioned
(d) All of the mentioned
I had been asked this question in an interview for job.
My doubt stems from Constant and Falling Head Permeability Test in portion Permeability of Geotechnical Engineering I