Question

The illuminance On a surface is six lux and the surface is 4 meters from the light source what is the intensity of the source

Answer 1

Answer : 96 candelas

Explanation : Luminous intensity is a quantity of light that is emitted by a light source with a solid angle in a particular direction.

We know the formula of luminous intensity

Luminous intensity = illuminance x distance from light source

`L_(v) = E_(v)* d^(2)`

`L_(v) = 6* 16\ candelas`

`L_(v) = 96\ candelas`

So, the intensity of the source will be 96 candelas.