Multiple choice

Lambert (Lb) is a unit for

  1. Luminance in MKS

  2. Luminance in FPS

  3. Luminance in CGS

  4. Luminance in SI

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

3   Luminance is the luminous intensity of a surface, measuring the intensity of the light emitted (or reflected) in all directions per unit of area of the surface. One Lambert is the luminance of a surface that emits or reflects one lumen per square centimetre.