Explain the term 'laminar flow'. Is the velocity of molecules same in all the layers in Laminar flow ? Explain you answer.

Explanation

**Step-by-Step Solution:**

1. **Definition of Laminar Flow**:
- Laminar flow refers to a type of fluid flow where the fluid moves in parallel layers, with minimal disruption between them. In this flow, each layer of fluid slides past adjacent layers smoothly, and the velocity of the fluid varies from one layer to another.

2. **Velocity Gradation**:
- In laminar flow, there is a regular change in velocity as we move from one layer to another. For instance, if we consider a fluid flowing in a pipe, the layer of fluid in contact with the pipe wall (the bottom layer) will have a velocity of zero, as it is stationary due to friction. The velocity increases as we move toward the center of the pipe.

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