Q113 / 180 · AIIMS 2001 · Physics

Which of the following physical quantities do not have same dimensions?

  • A
    pressure and stress
  • Correct answer
    B
    tension and surface tension
  • C
    strain and angle
  • D
    energy and work.

Solution

Pressure and stress both have the dimensions of Force/area. Strain and angle are both dimensionsless. Energy and work have the same dimensions force $\times$ distance. Tension and surface tension refer to two different physical quantities and their dimensions are different. Tension is a force and surface tension is force per unit length.

Hence, the correct answer is option: 'B'.

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