Unit of viscosity in SI:
AN s
BN/m
CPa s = kg/(m s) (poise = 10⁻¹ Pa s)
Dkg/m³
Answer & Solution
Correct answer: C. Pa s = kg/(m s) (poise = 10⁻¹ Pa s)
η: Pa s in SI. Or kg/(m s). Dimensional formula ML⁻¹T⁻¹. Water at 20°C: 1.0 × 10⁻³ Pa s. Historic: poise (P) = 0.1 Pa s. cP (centipoise) = water at room T.
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