The average velocity v of flow of clear water in a 100 cm (inner) diameter tube is measured

Q. The average velocity v of flow of clear water in a 100 cm (inner) diameter tube is measured using the ultrasonic flow meter as shown in the figure. The angle q is 45°. The measured transit times are t1 = 0.9950 ms and t2 = 1.0000 ms. The velocity v (in m/s) in the pipe is (up to one decimal place) _.

Ans: 4.8 – 5.2