Illumination of one lumen per sq. metre is called

Related MCQs

• For the same lumen output, the running cost of the fluorescent lamp is
• The illumination at various points on a horizontal surface illuminated by the same source varies as
• For normal reading the illumination level required is around
•                  is widely used in large industrial plants such as cold storages and ice plants as per the cost basis.
• Which one of the following inorganic refrigerants is often used?
• From the following refrigerants, which is one of the most stable refrigerants?
• For the transmission of heat from one body to another
• A perfect black body is one that