Laminar developed flow at a average velocity of 5m/s occurs in a pipe of 10 cm radius. the velocity at 5cm radius is
7.5 m /s
10 m /s
2.5 m / s
5 m /s
for a laminar flow in a pipe the profile of velocity is parabolic. and max velocity (at center) is double the avg velocity that is 5*2 = 10 m/s (max velocity ) and the velocity at r = 5 cm is Umax *(3/4) = 7.5 ms.