![The velocity profile in an incompressible, laminar boundary layer is shown in the figure below](https://www.gkseries.com/blog/wp-content/uploads/2023/09/The-velocity-profile-in-an-incompressible-laminar-boundary-layer-is-shown-in-the-figure-below.jpg)
Q. The velocity profile in an incompressible, laminar boundary layer is shown in the figure below. U is the free-stream velocity, u(y) is the stream-wise velocity component. The area of the black shaded region in the figure below represents the
![](https://www.gkseries.com/blog/wp-content/uploads/2023/09/Screenshot-885.png)
(A) boundary layer thickness.
(B) momentum thickness.
(C) displacement thickness.
(D) shape factor.
Ans: displacement thickness.