An open vessel containing an ideal liquid accelerates horizontally with acceleration a. Which statements are correct after the liquid reaches relative equilibrium?

Select all that apply

• Option A

  The free surface is perpendicular to the effective gravity

• Option B

  tanθ=a/g for the inclination of free surface with horizontal

• Option C

  Pressure increases in the direction of effective gravity

• Option D

  Along any line parallel to the free surface, pressure is constant