Yes, that is correct. Physical quantities are measurable aspects of the physical world, and they always have two essential components:

* Numerical magnitude: This is the numerical value that represents the amount of the quantity. For example, a distance of 10 meters has a numerical magnitude of 10.

* Unit: This defines the standard of measurement used for the quantity. The unit specifies the type of quantity being measured. In the distance example, the unit is "meters".

Without both a numerical magnitude and a unit, a physical quantity is incomplete and cannot be properly understood or compared to other quantities.

Here's an example:

* "10" is not a physical quantity. It's just a number.

* "meters" is not a physical quantity either. It's just a unit.

* "10 meters" is a complete physical quantity, because it has both a numerical magnitude (10) and a unit (meters).