Surface tension

Related MCQs

• A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, α = Angle of contact of the liquid surface, and σ = Surface tension)
• A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of
• Ratio of inertia force to surface tension is known as
• Dimensions of surface tension are
• The unit of surface tension is
• With an increase in size of tube, the rise or depression of liquid in the tube due to surface tension will
• The surface tension of mercury at normal temperature compared to that of water is
• The total pressure on a plane surface inclined at an angle 9 with the horizontal is equal to (where p is pressure intensity at centroid of area and A is area of plane surface.)
• The depth ‘d’ below the free surface at which the point velocity is equal to the average velocity of flow for a uniform laminar flow with a free surface, will be (where D is the depth of flow.)
• The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be