What is the unit of surface tension?
Correct Answer: Newton per meter (N/m)
- Step 1: Understand what surface tension is. It is a property of liquids that makes their surface behave like a stretched elastic membrane.
- Step 2: Know that surface tension is caused by the forces between the molecules at the surface of a liquid.
- Step 3: Realize that surface tension can be measured as the force acting along the surface of the liquid.
- Step 4: Remember that force is measured in Newtons (N) and length is measured in meters (m).
- Step 5: Since surface tension is force per unit length, we can express it as Newtons divided by meters.
- Step 6: Therefore, the unit of surface tension is Newton per meter (N/m).
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