Question

A foot-candle is ____

equivalent to 144 inch-candles
equivalent to the illumination produced by a source of one candle at a distance of one foot
a light source for viewing the inside of an oven
the primary method of illuminating a food-service area in most of the Indian sub-continent

Answer 1

Answer: This would be D. "The primary method of illuminating a food-service area in most of the Indian sub-continent"

Explanation: They may use these in places other than the indian sub continent though. But good luck with your work :)

Answer 2

The correct answer is ''equivalent to the illumination produced by a source of one candle at a distance of one foot.''

Step-by-step explanation:

A foot-candle is the amount of illumination received in an area of a surface that is a sphere with a radius of one foot, emitted by a light source with an intensity of one candle. The candela is a unit of luminous intensity and it is a fixed unit in the same way that a meter or kilogram works.A foot-candle can also be expressed in terms of light. This is the unit of how powerful light appears to be to the human eye, known as luminous flux. A one-foot candle is equivalent to the illumination emitted by light with a luminous flux of one lumen on an area of one square foot.