Lux is a unit of

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The unit of illuminance (or illumination) in the International System of Units $(SI)$ is the lux $(lx)$.Illuminance is defined as the luminous flu

Vedclass · Accepted Answer

Illuminance on a surface

Vedclass · Answer

(B) The unit of illuminance (or illumination) in the International System of Units $(SI)$ is the lux $(lx)$.Illuminance is defined as the luminous flux per unit area incident on a surface.Mathematically,$E = \frac{\Phi}{A}$,where $E$ is illuminance in lux,$\Phi$ is luminous flux in lumens $(lm)$,and $A$ is the area in square meters $(m^2)$.Therefore,$1 \ lx = 1 \ lm/m^2$.Thus,the correct option is $B$.

Similar Questions

Which of the following is not a unit of distance?

The unit of energy in the $SI$ system is:

The $SI$ unit of length is 'metre'. Suppose we adopt a new unit of length which equals $x$ metre. Then,the area of $1 \ m^2$ expressed in terms of the new unit has a magnitude of:

$10^3 \, g/cm^3 = \dots \, kg/m^3$

Which of the following is a unit of energy?

Vedclass Test Series

Exam Paper Generator

Online Exam Module