A Fraunhofer Diffraction Pattern Is Produced from a Light Source

question 76

Multiple Choice

A Fraunhofer diffraction pattern is produced from a light source of wavelength 671 nm.The light goes through a single slit and onto a screen 1.9 m away.The first dark fringe is 6.1 mm from the central bright fringe.What is the slit width? (1 nm = 10−⁹ m)

• A) 0.42 mm
• B) 0.21 mm
• C) 0.07 mm
• D) 0.31 mm
• E) ​0.034 mm

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Definitions:

Formal Operational Stage

A developmental phase, identified by Jean Piaget, where individuals (starting in adolescence) develop the ability to think abstractly and logically.

Preoperational Stage

A stage in Jean Piaget's theory of cognitive development (approximately ages 2 to 7) where children begin to use language and think symbolically, yet their thinking is still intuitive and egocentric.

Private Speech

Verbal communication directed at oneself for the purposes of self-guidance or self-regulation, often observed in children as part of their cognitive development.

Self-regulation

The ability to manage one's own emotions, thoughts, and behaviors in different situations effectively.