A cylindrical tube, with its base as shown in the figure, is filled with water. It is moving down with a constant acceleration 𝑎 along a fixed inclined plane with angle $$\theta = 45^\circ. P_1$$ and $$P_2$$ are pressures at points 1 and 2, respectively, located at the base of the tube. Let $$\beta = \frac{(P_1 − P_2)}{(\rho gd)}$$, where $$\rho$$ is density of water, 𝑑 is the inner diameter of the tube and 𝑔 is the acceleration due to gravity. Which of the following statement(s) is(are) correct?