IDES323 REVISION

1- Which of the following statements are incorrect of visual adaptation

• Eye takes a longer time to adopt to a brighter environment

• Eye can visually adapt to a dark theater on a bright sunny day in a shorter time

2- Which of the following statements are incorrect of visual adaptation?

• Transition areas provide time for the eye to adopt to different light environments

• Visual adaptation is the ability of the eye to control the amount of light it admits

3- select one correct statement of eye visual efficiency

• The eye visual efficiency decreases when the surrounding brightness increases to an optimum level and if the surrounding brightness further increases, loss of visibility may occur.

• The eye visual efficiency increases when the surrounding brightness increases to an optimum level and if the surrounding brightness further increases, visibility of the eye may increase.

• The eye visual efficiency increases when the surrounding brightness increases to an optimum level and if the surrounding brightness further increases, loss of visibility may occur.

• The eye visual efficiency decreases when the surrounding brightness increases to an optimum level and if the surrounding brightness further increases, visibility of the eye may continue to increase.

4- what percentage of electrical energy is converted to visible light in a GLS 'general lighting service lamp'?(Standarad Incandescent lamp)

• 70%

• 35%

• 5%

• 10

5- Color rendition depends on lamp color spectrum, reflective properties of surface and context. Which light source has the best color rendering property?

• Tungsten Halogen

•   Incandescent light source

• High pressure sodium

• daylight

6- which light source contributes to thermal discomfort due to high temprature surfaces

• Tungsten Halogens

• compact florescent

• Light emitting diodes

7- Select Visual Composition of the Space that describe the following picture.

• Focal Centers

• The Overhead Zone

• The Perimeter Zone

• The Occupied Zone

8-If a space has more than one focal area, which of the following two strategy is correct

• Use lighting to emphasize the surrounding area than the focal area

• Lighting strategy should emphasize one primary focal area than the other focal area

• Emphasize both focal area with same intensity of lighting

9- If you are required to design a lighting for a living room, which of the following strategies is correct?

• Consider the functional area and the vertical distribution of the perimeter area.

• Only concentrate on the focal area

• Suggest a decorative light fitting to hang on the ceiling to light up the space with general lighting

10-choose the correct statement from below :

• Convex mirrors are used in certain types of astronomical telescopes called reflecting telescopes.  

• Humans perceive polychromatic mixtures of light as a single color, which may or may not look like light from a monochromatic light source

• If the surface is smooth and shiny, like glass, water or polished metal, the light will reflect at the same angle as it hit the surface. It’s called Diffuse reflection.

• Specular reflection is when light hits an object and reflects in lots of different directions.