Light intensity.
the physical quantity is distance and unit is meters
it is a unit rate
Unit rate
the formula showing the relation between the unit of any physical quantity n the unit of fundamental physical quantity is called dimensional formula.........of dat quantity
To measure a physical quantity correctly and need to compare it with some standard quantities. Thus a standard unit is needed to measure a quantity correctly.
Illumination
lux
Lux is not a unit of length. The two units are utterly incompatible.Lux is not a unit of length. The two units are utterly incompatible.Lux is not a unit of length. The two units are utterly incompatible.Lux is not a unit of length. The two units are utterly incompatible.
The difference between quantity and unit in "16 pounds" is the unit is pounds and the quantity is 16.
Lux is used in measuring luminous flux per unit area.
lux
LUX is the measurement of illuminance and luminous emittance from light sources.
A lux (lx) is the SI unit of iluminance, or light intensity as seen by the human eye.
The lux is the SI unit of illuminance, and is equal to 1 lumen per square meter.
Lux is unit for measuring the illumination (illuminance) of a surface. It is the amount of light received per unit of surface area. You can' t convert watt, which is power, to Lux.
A standard use for a measurement of a physical quantity is called the unit of that physical quantity
It is a unit rate.A unit rate.