The nature of physical quantity is described by nature of its dimensions. When we observe an object, the first thing we notice is the dimensions. In fact, we are also defined or observed with respect to our dimensions that is, height, weight, the amount of flesh etc. Copy the link given below and paste it in new browser window to get more information on Dimensions of Physical Quantities www.askiitians.com/iit-jee-physics/general-physics/dimensions-of-physical-quantities/