Question

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

(a) Pressure and stress

(b) Tension and surface tension

(c) Strain and angle

(d) Energy and work.

Answer 1

Correct option (b) Tension and surface tension

Explanation :

Pressure and stress both have the dimensions of force/area. Strain and angle are both dimensionsless. Energy and work have the same dimensions force x 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.