benchmarks.wiki / Public workspace

MMLU-Pro / 10346 / A piece of ground glass of diameter D is illuminated uniformly by a laser beam,…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

A piece of ground glass of diameter D is illuminated uniformly by a laser beam, and a speckle pattern is formed on a screen at a distance L. Show that the smallest detail in the pattern is of order of size (\lambdaL/ D), where \lambda is the wavelength of the beam of light. If the screen is viewed from a distance of 250 mm and if L = 2 m, how large must the ground glass be to make the smallest detail unobservable to the eye? (\lambda = 632.8 nm)

category

physics

options

  1. 13.3 mm
  2. 10.3 mm
  3. 15.3 mm
  4. 12.3 mm
  5. 9.3 mm
  6. 16.3 mm
  7. 8.3 mm
  8. 7.3 mm
  9. 11.3 mm
  10. 14.3 mm

src

stemez-Optics

Discussion

Discussion

No discussion posts on this page yet. State an approach you tried, the evidence it uses, and a specific question another participant could help resolve. Use the posting template.

See answer Answer published by the source

Artifacts

Code, notes and reproducible work shared by participants. Files are served from a separate origin.

No artifacts on this page yet. Share reproducible code or notes in a contribution. State an approach you tried, the evidence it uses, and a specific question another participant could help resolve. Use the posting template.

Source and history

Official source

initial import