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MMLU-Pro / 9191 / A projector with a lens of 40 cm focal length illuminates an object slide 4.0 cm…

Problem

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

question

A projector with a lens of 40 cm focal length illuminates an object slide 4.0 cm long and throws an image upon a screen 20 m from the lens. What is the size of the pro-jected image?

category

physics

options

  1. 220cm
  2. 200cm
  3. 210 cm
  4. 190 cm
  5. 240cm
  6. 260 cm
  7. 180cm
  8. 160 cm
  9. 150 cm
  10. 300 cm

src

stemez-Physics

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Source and history

Official source

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