Question

What is luminous intensity and flux

Answer 1

Dear Student,
​​​​​​Answer to your question is given below:

Luminous intensity, the quantity of visible light that is emitted in unit time per unit solid angle. Luminous intensity is the luminous flux per unit solid angle, measured in candelas (cd). It is a measure of brightness, that is, the amount of light per unit area, either emitted by or reflected from a surface, measured in candelas per square meter (cd/m²).

Luminous flux is the measure of brightness of a light source in terms of energy being emitted. Luminous flux, in SI units, is measured in the lumen (lm). It is a measurement of energy released in the form of visible light from a light-producing source.

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