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Width of Aperture please help

  • Thread starter BuBbLeS01
  • Start date
602
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Width of Aperture...please help!!!

1. Homework Statement
A point source of light illuminates an aperture 2.3 m away. A 10.2-cm-wide bright patch of light appears on a screen 1.02 m behind the aperture. How wide is the aperture?

2. Homework Equations



3. The Attempt at a Solution
I can't figure out how to do this???
 

Answers and Replies

602
0
woops this was supposed to go under physics...please remove! thanks!
 
tiny-tim
Science Advisor
Homework Helper
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… just geometry …

1. Homework Statement
A point source of light illuminates an aperture 2.3 m away. A 10.2-cm-wide bright patch of light appears on a screen 1.02 m behind the aperture. How wide is the aperture?
Actually, this is geometry, not physics.

Just draw a diagram, apply ordinary geometry of similar triangles, and you should get the answer! :smile:
 

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