Question

Name a physical quantity which has no unit and no dimension

Answer 1

There is no physical quantity which has dimensions but no units, because units are derived from the dimensional analysis itself. However, on the contrary, there are some physical quantities which have no dimensions but still have units. For example :

Solid angle, angular velocity etc

Answer 2

an alternative you matter that white substance to all real entities has no unit of measurement mass and weight and two attributes of 3D matter which are often consider added to represent equalent of 3D matter content of a body have ever 3D matter has special existence and is measured by spiritual Diamond seem Atta reexamined there is no physical quantity which has dimensions but no units because units are there derived from dimensional analysis itself however on the contrary there are some physical quantities which have no dimensions but still have units for example solid angle angular velocity