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If the surface of liquid is convex, then
- a)cohesion pressure is negligible
- b)cohesion pressure is decreased
- c)cohesion pressure is increased
- d)there is no cohesion pressure
- e)none of the above
Correct answer is option 'C'. Can you explain this answer?
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Convex Meniscus and Cohesion Pressure
Convex Meniscus
When a liquid is placed in a container, its surface takes the shape of a curve at the point where it meets the walls of the container. This curve is called a meniscus. Depending on the nature of the liquid and the container, the meniscus can either be concave or convex. If the liquid molecules have a stronger attraction to each other than to the container walls, the meniscus will be convex.
Cohesion Pressure
The attraction between the molecules of a liquid is called cohesion. Cohesion causes the liquid to resist any attempt to increase its surface area. This resistance is called cohesion pressure. The value of cohesion pressure depends on the nature of the liquid and the temperature.
Effect of Convex Meniscus on Cohesion Pressure
When the meniscus of a liquid is convex, it means that the liquid molecules are more attracted to each other than to the container walls. This results in a higher cohesion pressure. Therefore, the correct answer is option C, which states that the cohesion pressure is increased when the surface of a liquid is convex.
In civil engineering, the concept of cohesion is important when dealing with soil mechanics. The cohesion of soil is a measure of the strength of the bonds between the soil particles. Cohesion is one of the factors that determine the shear strength of soil. The greater the cohesion, the greater the shear strength. Therefore, understanding the concept of cohesion is important in designing safe and stable structures on soil.
Convex Meniscus
When a liquid is placed in a container, its surface takes the shape of a curve at the point where it meets the walls of the container. This curve is called a meniscus. Depending on the nature of the liquid and the container, the meniscus can either be concave or convex. If the liquid molecules have a stronger attraction to each other than to the container walls, the meniscus will be convex.
Cohesion Pressure
The attraction between the molecules of a liquid is called cohesion. Cohesion causes the liquid to resist any attempt to increase its surface area. This resistance is called cohesion pressure. The value of cohesion pressure depends on the nature of the liquid and the temperature.
Effect of Convex Meniscus on Cohesion Pressure
When the meniscus of a liquid is convex, it means that the liquid molecules are more attracted to each other than to the container walls. This results in a higher cohesion pressure. Therefore, the correct answer is option C, which states that the cohesion pressure is increased when the surface of a liquid is convex.
In civil engineering, the concept of cohesion is important when dealing with soil mechanics. The cohesion of soil is a measure of the strength of the bonds between the soil particles. Cohesion is one of the factors that determine the shear strength of soil. The greater the cohesion, the greater the shear strength. Therefore, understanding the concept of cohesion is important in designing safe and stable structures on soil.
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If the surface of liquid is convex, thena)cohesion pressure is negligi...
Force of surface tension is much less than that of force of contraction of the liquid. This trends to make the surface of the liquid convex shape.
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If the surface of liquid is convex, thena)cohesion pressure is negligibleb)cohesion pressure is decreasedc)cohesion pressure is increasedd)there is no cohesion pressuree)none of the aboveCorrect answer is option 'C'. Can you explain this answer?
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