Light from a HeNe Laser (632

question 38

Multiple Choice

Light from a HeNe laser (632.8 nm wavelength) is directed upon a straightened strand of human hair, 7.5 m from the wall. By examining the diffraction pattern produced on the wall, the diameter of the hair can be determined (the diffraction pattern thus produced has minima in the same locations as if the hair were a slit of the same width in an otherwise opaque barrier) . If the central diffraction maximum is measured to be 14.6 cm wide, what is the diameter of the hair?

• A) 65 µm
• B) 32.5 µm
• C) 43.3 µm
• D) 86.6 µm

---

Definitions:

Pill Organizers

Devices that are used to sort and store pills according to the times and days they are to be taken, assisting in medication management.

Simplified Schedule

A streamlined or reduced complexity timetable or plan, often used to make tasks or engagements more manageable.

Scared Straight

A crime prevention program that aims to deter juvenile participants from future criminal offenses by exposing them to the realities of prison life.

Behavioral Intervention

A range of strategies or treatments designed to alter an individual's behavior, often used to improve mental health or modify undesirable behaviors.