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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define surface tension.
💡 Hint: Think about the forces at the surface of a liquid.
Question 2
Easy
What are cohesive forces?
💡 Hint: Consider why water droplets stay together.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What acts as the main force creating surface tension?
- Adhesive Forces
- Cohesive Forces
- Gravitational Forces
💡 Hint: Think about the forces that hold liquid molecules together.
Question 2
Surface tension increases with temperature. True or False?
- True
- False
💡 Hint: Consider the effect of heating on molecules.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A water droplet has a radius of 2 mm. Calculate the surface tension force acting on the droplet if the liquid's surface tension is 0.072 N/m. Use the formula f = surface_tension * circumference.
💡 Hint: Don't forget to calculate the circumference first!
Question 2
If the surface tension of mercury is 0.485 N/m, what is the pressure difference across a mercury drop with a radius of 5 mm?
💡 Hint: Use the surface tension relation formula.
Challenge and get performance evaluation