Chapter 12 – Fluid Mechanics, Surface Tension and Viscosity
Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 12 - Fluid Mechanics, Surface Tension and Viscosity
The angle of contact between glass and water is 0o and it rises in a capillary upto 6 cm when its surface tension is 70 dyn/cm. Another liquid of surface tension 140 dyn/cm, angle of contact 60 degree and relative density 2 will rise in the same capillary up to
15
Sep
The angle of contact between glass and water is 0o and it rises in a capillary upto 6 cm when its surface tension is 70 dyn/cm. Another liquid of surface tension 140 dyn/cm, angle of contact 60 degree and relative density 2 will rise in the same capillary up to angle of contact 60 degree [...]
A ring is cut from a platinum tube 8.5 cm internal and 8.7 cm external diameter. It is supported horizontally from the pan of a balance, so that it comes in contact with the water in a glass vessel. If an extra 3.103 gf is required to pull it away from water, the surface tension of water is:
15
Sep
A ring is cut from a platinum tube 8.5 cm internal and 8.7 cm external diameter. It is supported horizontally from the pan of a balance, so that it comes in contact with the water in a glass vessel. If an extra 3.103 gf is required to pull it away from water, the surface tension [...]
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A ring is cut from a platinum tube 8.5 cm internal and 8.7 cm external diameter. It is supported horizontally from the pan of a balance ,
so that it comes in contact with the water in a glass vessel. If an extra 3.103 gf is required to pull it away from water ,
the surface tension of water is: ,
A straw 6 cm long floats on water. The water film on one side has surface tension of 50 dyn/cm. On the other slide, camphor reduces the surface tension to 40 dyn/cm. The resultant force acting on the straw is
15
Sep
A straw 6 cm long floats on water. The water film on one side has surface tension of 50 dyn/cm. On the other slide, camphor reduces the surface tension to 40 dyn/cm. The resultant force acting on the straw is A straw 6 cm long floats on water. The water film on one side has [...]
A large number of droplets, each of radius a, coalesce to form a bigger drop of radius b. Assume that the energy released in the process is converted into the kinetic energy of the drop. The velocity of the drop is (σ=surface tension, ρ=density)
15
Sep
A large number of droplets, each of radius a, coalesce to form a bigger drop of radius b. Assume that the energy released in the process is converted into the kinetic energy of the drop. The velocity of the drop is (σ=surface tension, ρ=density) A large number of droplets coalesce to form a bigger drop [...]
A glass rod of radius r1 is inserted symmetrically into a vertical capillary tube of radius r2 such that their lower ends are at the same level. The arrangement is now dipped in water. The height to which water will rise into the tube will be (σ= surface tension of water, ρ= density of water)
15
Sep
A glass rod of radius r1 is inserted symmetrically into a vertical capillary tube of radius r2 such that their lower ends are at the same level. The arrangement is now dipped in water. The height to which water will rise into the tube will be (σ= surface tension of water, ρ= density of water) [...]
Two soap bubbles, one of radius 50 mm and the other of radius 80 mm, are brought in contact so that they have a common interface. The radius of the curvature of the common interface is
15
Sep
Two soap bubbles, one of radius 50 mm and the other of radius 80 mm, are brought in contact so that they have a common interface. The radius of the curvature of the common interface is are brought in contact so that they have a common interface. The radius of the curvature of the common [...]
A water drop is divided into 8 equal droplets. The pressure difference between the inner and outer side of the big drop
15
Sep
A water drop is divided into 8 equal droplets. The pressure difference between the inner and outer side of the big drop A water drop is divided into 8 equal droplets. The pressure difference between the inner and outer side of the big drop September 15, 2020 Category: Cengage JEE Mains Physics by B.M Sharma [...]
If T is surface tension of soap solution, the amount of work done in blowing a soap bubble from a diameter D to a diameter 2D is
15
Sep
If T is surface tension of soap solution, the amount of work done in blowing a soap bubble from a diameter D to a diameter 2D is If T is surface tension of soap solution the amount of work done in blowing a soap bubble from a diameter D to a diameter 2D is September [...]
A spherical liquid drop of radius R is divided into eight equal droplets. If the surface tension is T, then the work done in this process will be
15
Sep
A spherical liquid drop of radius R is divided into eight equal droplets. If the surface tension is T, then the work done in this process will be A spherical liquid drop of radius R is divided into eight equal droplets. If the surface tension is T then the work done in this process will [...]
Water rises to a height of 2 cm in a capillary tube. If the tube is tilted 60 degree from the vertical, water will rise in the tube to a length of
15
Sep
Water rises to a height of 2 cm in a capillary tube. If the tube is tilted 60 degree from the vertical, water will rise in the tube to a length of Water rises to a height of 2 cm in a capillary tube. If the tube is tilted 60 degree from the vertical water [...]