An incompressible fluid (kinematic viscosity = 7.4 $\times$10–7 m2/s, specific gravity, 0.88) is held between two parallel plates. If the top plate is moved with a velocity of 0.5 m/s while the bottom one is held stationary, the fluid attains a linear velocity profile in the gap of 0.5 mm between these places; the shear stress in Pascal on the surface of bottom plate is:
(a) 65.1 (b) 0.651 (c) 6.51 (d) 651