How Does the Brightness of an Object Vary with Distance

question 7

Multiple Choice

How does the brightness of an object vary with distance from the object?

• A)It remains constant with varying distance
• B)It varies as the inverse of distance
• C)It decreases as the square of distance
• D)It decreases as the cube of distance

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Definitions:

REM Sleep

A sleep phase characterized by rapid eye movement, during which dreams often occur, and the body experiences decreased muscle tone.

Dreaming

A collection of mental images, ideas, and emotional experiences that happen during sleep.

Brain Waves

The rhythmic or repetitive patterns of neural activity in the brain, measurable by electroencephalography (EEG).

Frequency

The number of times an event occurs within a specified period of time; in physics, it is the number of waves that pass a fixed point per unit of time.