Angle reflectors are used to provide illumination in a vertical plane, where reflectors used are of the ________.

The correct answer is option 1):(concentrating type)

Concept:

• Angle reflectors are used to provide illumination in a vertical plane whereas concentrating-type reflectors are used
• These can be mounted on suitable stanchions or the walls

Additional Information 

Industrial Light Fittings for Factory Lighting

For industrial or factory lighting design the fitting should be provided such that it is simple in design and could be easily cleaned. The following are the types of fittings used in industries.

1. Standard Reflectors for Factory Lighting:
The reflectors are made to accommodate lamps of ratings from 40 to 1500 Watts. These deflectors are mounted at a spacing equal to about 1.5 times their mounting height above the working plane to provide uniform illumination.

2. Diffusing Fittings:
When a sufficient amount of diffusing light is required, a diffusing glass screen may be fixed across a standard deflector. Such types of fittings are used where highly polished articles are dealt with.

3. Concentrating reflectors :

A reflector with a concentrated beam is employed in large machine shops and foundries, where the fittings are to be mounted at a considerable height above the working plane. In such places, an ordinary reflector would have too wide an angle of divergence and would waste a great deal of light on the walls.

4.Enclosed diffusing fittings :

An opal globe completely enclosing the lamp giving a very even and well-diffused light is used when light-coloured walls and ceiling are there