Chapter 13 – Fluid Mechanics

Water rises in a capillary tube to a certain height such that the upward force due to surface tension is balanced by 75×10^−4 newton force due to the weight of the liquid. If the surface tension of water is 6×10^-2` N/m the inner circumference of the capillary must be: Which graph represents the variation of [...]

Two parallel glass plates are dipped partly in a liquid of density d keeping them vertical. If the distance between the plates is ′x Surface tension for liquid is T & angle of contact is θ then rise of liquid between the plates due to capillary will be Which graph represents the variation of surface [...]

Which graph represents the variation of surface tension with temperature over small temperature ranges for water? Which graph represents the variation of surface tension with temperature over small temperature ranges for water? September 18, 2020 Category: Arihant Physics by D.C Pandey , Chapter 13 - Fluid Mechanics , Volume 1 ,

Two soap bubbles of radii r1and r2 equal to 4 cm and 5 cm are touching each other over a common surface S1S2 (shown in figure). Its radius will be: Two soap bubbles of radii r1and r2 equal to 4 cm and 5 cm are touching each other over a common surface S1S2 (shown in [...]

The surface tension of a soap solution is 25×10^−3 N/m. The excess pressure inside a soap bubble of diameter 1cm is: The surface tension of a soap solution is 25×10^−3 N/m. The excess pressure inside a soap bubble of diameter 1cm is: September 18, 2020 Category: Arihant Physics by D.C Pandey , Chapter 13 - [...]

If two soaps bubbles of equal radii r coalesce then the radius of curvature of interface between two bubble will be: If two soaps bubbles of equal radii r coalesce then the radius of curvature of interface between two bubble will be: September 18, 2020 Category: Arihant Physics by D.C Pandey , Chapter 13 - [...]

The surface tension of a soap solution is 2×10^−2N/m. To blow a bubble of radius 1cm, the work done is The surface tension of a soap solution is 2×10^−2N/m. To blow a bubble of radius 1cm the work done is? September 18, 2020 Category: Arihant Physics by D.C Pandey , Chapter 13 - Fluid Mechanics [...]

If work W is done in blowing a bubble of radius R from a soap solution. Then the work done is blowing a bubble of radius 2R from the same solution is If work W is done in blowing a bubble of radius R from a soap solution. Then the work done is blowing a [...]

A 10 cm long wire is placed horizontally on the surface of water and is gently pulled up with a force of 2×10^−2 N. To keep the wire in equilibrium, the surface tension in Nm^−1 of water is. A 10 cm long wire is placed horizontally on the surface of water and is gently pulled [...]

A square frame of side ‘L’ is dipped in a liquid. On taking out, a membrane is formed. If the surface tension of liquid is T, the force acting on one side of the frame will be a membrane is formed. If the surface tension of liquid is T A square frame of side 'L' [...]