Question Detail
Question
Surface tension, denoted by γ, is defined as the force acting along a line per unit length. What is its SI unit?
Correct Answer
Option B is the correct answer.
Detailed Explanation
Surface tension γ is defined as force per unit length, γ = F / l. Therefore, its SI unit is newton per meter (N/m).
Hint
Recall the formula for surface tension. The unit is derived directly from the units of force and length.