Avixa CTS: Light (AI gen) UPDATED
ACTUAL Exam Questions and CORRECT
Answers
What is the standard international unit of illuminance? - CORRECT ANSWER - Lux
What does an incident light meter measure? - CORRECT ANSWER - The light coming
directly from a source
What is the unit of luminous flux? - CORRECT ANSWER - lumen (lm)
What is the base unit of luminous intensity - CORRECT ANSWER - candela (cd)
How many lux are approximately equal to one foot-candle? - CORRECT ANSWER -
10.76 lux
Which method is most commonly used to measure lumens worldwide? - CORRECT
ANSWER - American National Standards Institute (ANSI)
What is the international unit of luminance commonly referred to as? - CORRECT
ANSWER - The nit is the international unit of luminance, equivalent to one candela per
square meter.
According to the inverse square law, if you double your distance from a light source, how much
will the intensity decrease? - CORRECT ANSWER - According to the inverse square law,
if you double your distance from a light source, the intensity will decrease by a factor of 4 (1/2²).
If you triple the distance from a light source, how much of the original intensity will remain? -
CORRECT ANSWER - The correct answer is C) 1/9. Tripling the distance from a light
source reduces the intensity to 1/9 (1/3²) of the original intensity.
ACTUAL Exam Questions and CORRECT
Answers
What is the standard international unit of illuminance? - CORRECT ANSWER - Lux
What does an incident light meter measure? - CORRECT ANSWER - The light coming
directly from a source
What is the unit of luminous flux? - CORRECT ANSWER - lumen (lm)
What is the base unit of luminous intensity - CORRECT ANSWER - candela (cd)
How many lux are approximately equal to one foot-candle? - CORRECT ANSWER -
10.76 lux
Which method is most commonly used to measure lumens worldwide? - CORRECT
ANSWER - American National Standards Institute (ANSI)
What is the international unit of luminance commonly referred to as? - CORRECT
ANSWER - The nit is the international unit of luminance, equivalent to one candela per
square meter.
According to the inverse square law, if you double your distance from a light source, how much
will the intensity decrease? - CORRECT ANSWER - According to the inverse square law,
if you double your distance from a light source, the intensity will decrease by a factor of 4 (1/2²).
If you triple the distance from a light source, how much of the original intensity will remain? -
CORRECT ANSWER - The correct answer is C) 1/9. Tripling the distance from a light
source reduces the intensity to 1/9 (1/3²) of the original intensity.
