JEE Advanced | 2014Fluid MechanicsHard
Question
A glass capillary tube is of the shape of a truncated cone with an apex angle α so that its two ends have cross sections of different radii. When dipped in water vertically, water rises in it to a height h, where the radius of its cross section is b. If the surface tension of water is S, its density is ρ, and its contact angle with glass is θ. the value of h will be (g is the acceleration due to gravity)
Options
A.
cos(θ - α)
cos(θ - α)B. cos(θ + α)
cos(θ + α)C. cos(θ - α/2)
cos(θ - α/2)D. cos(θ + α/2)
cos(θ + α/2)
= πb2 × ρh
= hMore Fluid Mechanics Questions
Spherical balls of radius R are falling in a viscous fluid of viscosity η with a velocity v. The retarding viscous ...A solid of density D is floating in a liquid of density d. If υ is the volume of solid submerged in the liquid and...There is no change in the volume of a wire due to change in its length on stretching. The poisson′s ratio of the m...If V1 and V2 be the volumes of the liquids flowing out of the same tube in the same interval of time and h1 and h2 their...To calculate the rate of flow of a liquid, which of the following is used.?...