In a Dark Indoor Environment One Single Axis Illuminator Is

question 61

Multiple Choice

In a dark indoor environment one single Axis illuminator is available. At a distance of 1 m (3 ft 3 in) away from the illuminator the light intensity is 1024 lux. At what distance from the light source will the light intensity be 256 lux?

• A) 2 m (6 ft 7 in)
• B) 4m{13 ft 1 in)
• C) 8 m (26 ft 3 in)
• D) 16 m (52 ft 6 in)

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