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Homework Help: Optics:Mirrors at right angles

  1. Jul 7, 2017 #1
    1. The problem statement, all variables and given/known data

    2. Relevant equations

    3. The attempt at a solution

    There will be 3 images formed .If the man is standing symmetrically then first image will be behind mirror M1 .2nd will be behind M2 . 3rd will lie on the angle bisector of the mirrors .This image will be behind both M1 and M2 .

    Now I don't think in any of the images , the man will be seen using his right hand .He will be seen combing with his left hand .But this is incorrect answer .

    What is the mistake?

    Attached Files:

  2. jcsd
  3. Jul 7, 2017 #2


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    Try sketching the layout. What will this image look like?

    Have you ever looked into the corner of two mirrors at right-angles? Its a reasonably common find in elevators.
  4. Jul 8, 2017 #3
    Do we assume man to be facing one of the mirrors Or Is he facing the corner of the mirrors ?

    No . Never had the opportunity to look in right angled mirrors .
  5. Jul 8, 2017 #4


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    It simply says 'how many images will be seen'. i.e. no assumptions need be made.

    BTW, you noted that yourself in your answer: 3 images will be seen.

    Pretend you are hovering over the man's head. Sketch the diagram of the images:
    Last edited: Jul 8, 2017
  6. Jul 8, 2017 #5
    From your posts it seems that this 3rd image behind the corner is the one where the man is seen using the right hand . Is that the case ?
  7. Jul 8, 2017 #6


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    I am not saying that at all.

    I provided a sketch for you to mark up.
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