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

 2009  216 AIIMSAIIMS 2001Physical World, Units and Measurements Report Error

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 × 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.