Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Image Height

  1. Mar 29, 2010 #1
    1. The problem statement, all variables and given/known data
    Your friend is 1.7 m tall.

    What is the height of her image when she is 4.2 m from you?


    2. Relevant equations

    I used di/do and multiplied that by the height of the friend

    3. The attempt at a solution
    I did (4.2/3.5)(1.7) but it was wrong. Not really sure what I'm doing wrong here.
     
  2. jcsd
  3. Mar 29, 2010 #2

    rl.bhat

    User Avatar
    Homework Helper

    Where the image is formed? On the retina? What is 3.5 in your attempt?
     
  4. Mar 29, 2010 #3
    nevermind I found my mistake. thanks for the help though
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook