Question

SI unit of luminous power​

Answer 1

Answer:

The derived SI unit of luminous energy is a lumen second (lm⋅s), the multiplication of the lumen (lm) and the second (s). The lumen second is sometimes called the talbot. Luminous flux per unit solid angle per unit projected source area. The candela per square metre is sometimes called the nit.

Answer 2

• The derived SI unit of luminous energy is a lumen second (lm⋅s), the multiplication of the lumen (lm) and the second (s).
• The lumen second is sometimes called the talbot. Luminous flux per unit solid angle per unit projected source area.
• The candela per square metre is sometimes called the nit.