IDFX Lighting and Color Theory 2

Question 1

Which color rendering index (CRI) value is required for retail spaces where accurate color judgment of merchandise is essential?

Accepted Answer

CRI 90 or above

Answer

Retail environments requiring accurate color appraisal of merchandise — particularly clothing, jewelry, and cosmetics — should use light sources with a CRI of 90 or above to ensure colors appear true to life.

Question 2

The Munsell Color System describes color using three attributes. Which combination is correct?

Accepted Answer

Hue, chroma, value

Answer

The Munsell System identifies colors by hue (the color family), value (lightness/darkness on a scale of 0-10), and chroma (the saturation or purity of the color).

Question 3

In additive color mixing (light), which three primary colors combine to create white light?

Accepted Answer

Red, green, blue

Answer

Additive color mixing involves combining light wavelengths. Red, green, and blue (RGB) are the primary colors of light; combining all three at full intensity produces white light.

Question 4

What is the primary purpose of a photometric report for a luminaire?

Accepted Answer

To document the distribution pattern and output of light from the fixture

Answer

A photometric report (or IES file) documents how light is distributed from a luminaire — including candela distribution, lumen output, beam angles, and efficiency — enabling designers to predict illuminance levels in a space.

Question 5

Simultaneous contrast in color theory refers to which phenomenon?

Accepted Answer

Colors appearing different depending on the surrounding or adjacent colors

Answer

Simultaneous contrast occurs when adjacent colors influence each other's perceived hue, value, or chroma. For example, a gray square appears lighter against a dark background and darker against a light background.

IDFX - Interior Design Fundamentals Exam Practice Test

IDFX - Interior Design Fundamentals Exam Practice Test

IDFX Lighting and Color Theory 2