The Intensity I of Light Varies Inversely as the Square $1 \frac { 2 } { 9 }$

question 69

Multiple Choice

The intensity I of light varies inversely as the square of the distance D from the source. If the intensity of illumination on a screen 5 ft from a light is 2 foot candles, find the intensity on a screen 15 ft from the light.

• A) \(1 \frac { 2 } { 9 }\) foot-candles
• B) \(\frac { 2 } { 9 }\) foot-candle
• C) \(\frac { 1 } { 5 }\) foot-candle
• D) 2 foot-candles

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Definitions:

Subcutaneous Tissue

The layer of tissue beneath the skin that contains fat and connective tissue, providing insulation and padding to the body.

Pressure Ulcer

A localized injury to the skin and/or underlying tissue, usually over a bony prominence, caused by pressure or pressure in combination with shear.

Anatomical Location

A term used to describe a specific location or position within the body or one of its parts.

Lesion Depth

The measurement of how deep a wound, sore, or damaged area extends beneath the surface of the skin or organ.