StudyWithGenius

Illumination

Welcome to  Illumination

1. 
The unit of solid angle is
2. 
Carbon arc lamps are commonly used in
3. 
Lightwave travel with a velocity of
4. 
Candela is the unit of
5. 
The illumination is directly proportional to the cosine of the angle made by the normal to the illuminated surface with the direction of the incident flux. Above statement is associated with
6. 
Illumination level required for precision work is around
7. 
The radiant efficiency of the luminous source depends on
8. 
Which curve represents life of the lamp ?
Add description here!
9. 
One lumen per square meter is the same as
10. 
Lumen/watt is the unit of
11. 
Which gas is sometimes used in filament lamps ?
12. 
Which bulb operates on lowest power ?
13. 
The output of a tungsten filament lamp depends on
14. 
Melting temperature of tungsten is
15. 
A zero watt lamp consumes

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