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Alex, a School Student, Cannot Find His Classroom

question 21

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Alex, a school student, cannot find his classroom. He stops a student in the hallway to ask for directions. Since Alex asked someone else for information that he did not have, we can infer that Alex has  _____.


Definitions:

Perceivable Difference

The smallest difference in stimulation that a person can detect 50% of the time.

Wavelength of Light Waves

The distance between consecutive peaks or troughs in a light wave, determining its color in the visible spectrum.

Amplitude of Light Waves

The height of a light wave, which determines the intensity or brightness of light.

Frequency of Light Waves

The number of wave cycles (peaks and troughs) that pass a specific point in space per unit of time, characterizing different types of light in the electromagnetic spectrum.

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