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Physics Experiment: Surface Tension of Water

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Physics Experiment: Surface Tension of Water

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Questions and Answers

What is the main factor on which capillary properties depend?

Temperature of the fluid

Density of the fluid

Difference in cohesion and adhesion forces (correct)

Length of the capillary tube

Why does water rise inside a capillary tube?

Because the force of cohesion overcomes the force of adhesion (correct)

Due to gravitational pull

Because of the density of water

Due to high temperature

Why is the water inside a capillary tube higher than mercury?

Mercury has lower adhesion than water

Mercury has greater cohesion than water

Mercury has lower surface tension than water

Mercury has greater density than water (correct)

What is the force that leads to the rise of liquid molecules inside a capillary tube?

Force of adhesion Signup and view all the answers

What should be measured to account for changes in surface tension during capillary action?

Inner radius of the capillary tube Signup and view all the answers

Which step in the method of work is crucial for understanding capillary action?

Step 2: Immersing the lower end of the capillary tube vertically into the beaker containing the water Signup and view all the answers

What is the purpose of the experiment mentioned in the text?

To calculate the surface tension of water using the capillary tube method. Signup and view all the answers

Which tool was NOT used in the experiment to calculate surface tension?

Bunsen burner. Signup and view all the answers

What is the definition of surface tension as provided in the text?

The property of liquid surface behaving like an elastic film. Signup and view all the answers

Why does surface tension occur in water according to the text?

Resultant force on liquid surface is not zero, unlike inside the liquid. Signup and view all the answers

How do cohesive forces contribute to surface tension?

By causing forces between different molecules of matter. Signup and view all the answers

What factor does NOT influence surface tension according to the text?

Pressure. Signup and view all the answers