Single-Slit Diffraction: a Light Beam Shines Through a Thin Slit

question 3

Multiple Choice

Single-slit diffraction: A light beam shines through a thin slit and illuminates a distant screen. The central bright fringe on the screen is 1.00 cm wide, as measured between the dark fringes that border it on either side. Which of the following actions would decrease the width of the central bright fringe? (There may be more than one correct choice.)

• A) increase the wavelength of the light
• B) decrease the wavelength of the light
• C) increase the width of the slit
• D) decrease the width of the slit
• E) put the apparatus all under water

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Definitions:

Emotional Reactions

The spontaneous and often unconscious responses to events or stimuli that involve feelings, physiological arousal, and changes in behavior.

Reaction Time

The amount of time it takes to respond to a stimulus.

Observable Behaviours

Observable and quantifiable behaviors or responses of a person to either external or internal factors.

Psychological Perspective

A viewpoint in psychology that emphasizes understanding human behavior by examining mental functions and processes.