Chapter 13 – Fluid Mechanics

Pressure inside two soap bubbles is 1.01 and 1.02 atmosphere. The ratio of their volume is: Pressure inside two soap bubbles is 1.01 and 1.02 atmosphere. The ratio of their volume is: September 18, 2020 Category: Arihant Physics by D.C Pandey , Chapter 13 - Fluid Mechanics , Volume 1 ,

Two small drops of mercury, each of radius R coalesce to form a single large drop. The ratio of the total surface energy before and after the change is: each of radius R coalesce to form a single large drop. The ratio of the total surface energy before and after the change is: Two small [...]

Water flows through a frictionless duct with a cross section varying as shown in fig. Pressure p at points along the axis is represented by Water flows through a frictionless duct with a cross section varying as shown in fig. Pressure p at points along the axis is represented by September 18, 2020 Category: Arihant [...]

A lead shot of 1mm diameter falls through a long column of glycerine. The variation of its velocity v with distance covered is represented by : A lead shot of 1mm diameter falls through a long column of glycerine. The variation of its velocity v with distance covered is represented by : September 18, 2020 [...]

Water flows in a stream line manner through a capillary tube of radius a, the pressure difference being P and the rate of flow Q. If the radius is reduced to a/2 and the pressure is increased to 2P, the rate of flow becomes : the pressure difference being P and the rate of flow [...]

Two capillaries of same length and radii in the ratio 1: 2 are connected in series. A liquid flows through them in streamlined condition. If the pressure across the two extreme ends of the combination is 1 m of water, the pressure difference across first capillary is Upthrust will remain same September 18, 2020 Category: [...]

Two capillary tubes of same length but radii r1 ,r2 are fitted in parallel to a bottom of a vessel. The pressure head is p. What should be the radius of single tube that can replace the two tubes so that the rate of flow is same as before r2 are fitted in parallel to [...]

The terminal velocity v of a small steel ball of radius r falling under gravity through a column of a viscous liquid of coefficient of viscosity η depends on mass of the ball m, acceleration due to gravity g, coefficient of viscosity η and radius r. Which of the following relations is dimensionally correct ? [...]

The ratio of the terminal velocities of two drops of radii R and R/2 is The ratio of the terminal velocities of two drops of radii R and R/2 is September 18, 2020 Category: Arihant Physics by D.C Pandey , Chapter 13 - Fluid Mechanics , Volume 1 ,

A tank is filled to a height H. The range of water coming out of a hole which is a depth H/4 from the surface of water level is A tank is filled to a height H. The range of water coming out of a hole which is a depth H/4 from the surface of [...]