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The dimension of dynamic viscosity is:

1. M L⁻¹ T⁻¹
2. M L⁻¹ T⁻²
3. M L⁻² T⁻²
4. M L⁰ T⁻¹

Correct answer: M L⁻¹ T⁻¹

Solution

Dynamic viscosity measures a fluid's resistance to flow, which is defined as the force per unit area (pressure) divided by the velocity gradient. This results in the dimensional formula of mass per unit length per unit time, represented as M L⁻¹ T⁻¹.

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