Question

Which of the following physical quantity has no unit?

• A. Relative density
• B. Density
• C. Pressure
• D. Thrust

Answer 1

The correct option is A Relative density

• The relative density is the ratio of the density of the substance to the density of water.
• The S.I. unit of density is kg/$m^3$
• The S.I. unit of pressure is pascal.
• The S.I. unit of thrust is N.