A Pair of Narrow Slits That Are $1.8 \mathrm {~mm}$ Apart Is Illuminated by a Monochromatic Coherent Light Source

question 14

Multiple Choice

A pair of narrow slits that are $1.8 \mathrm {~mm}$ apart is illuminated by a monochromatic coherent light source. A fringe pattern is observed on a screen $4.8 \mathrm {~m}$ from the slits. If the wavelength of the monochromatic light is $450 \mathrm {~nm}$ , what is the angular separation between adjacent dark fringes on the screen, measured in milliradians?

• A) \(0.30 \mathrm { mrad }\)
• B) \(0.25 \mathrm { mrad }\)
• C) \(0.15 \mathrm { mrad }\)
• D) \(0.36 \mathrm { mrad }\)
• E) \(0.20 \mathrm { mrad }\)

---

Definitions:

Neurotic

A characteristic of personality marked by fluctuations in emotion, anxiousness, shifts in mood, concerns, and apprehension.

Creativity

The ability to generate new ideas, solutions, or products that are both novel and appropriate.

Realistic Accuracy Model

A framework for understanding how accurate personality judgments are made, focusing on the availability, detection, and utilization of relevant information.

Talkativeness

The quality of being inclined to talk frequently or at length.