1. Visit this thread to beta-test StudySchedule.org. StudySchedule is a free nonprofit site that builds dynamic MCAT study schedules unique for your needs and timeline.
  2. It’s Test Prep Week! Visit the Test Prep Forums to learn about test prep products and services, ask questions in test-related AMA threads, take advantage of exclusive SDN member discounts, and enter to win free stuff!
Hey, Guest, do you know how much will it cost you to apply to medical school? Check out SDN's Medical School Application Cost Calculator and plan your budget.
Studying for the DAT, GRE, OAT or PCAT? Test Prep Week Exhibitors are here to help!

Calculating magnification for Converging lens....

Discussion in 'MCAT Study Question Q&A' started by johnwandering, May 7, 2012.

  1. SDN is made possible through member donations, sponsorships, and our volunteers. Learn about SDN's nonprofit mission.
  1. johnwandering

    johnwandering 7+ Year Member

    430
    5
    May 18, 2009
    I am quite confused how to do this, because of sign conventions.


    When an object s is on the left side of the lens, it is designated as positive.
    When an image s' is REAL, it is designated as positive.

    this would bring our magnification to
    m=s'/s, which is a positive value.

    But for converging lens, m should be a negative number.......

    m=h'/h

    Because h' is inverted, it should be a negative value... making m a negative value as well. But that would make our first equation impossible.


    What's up with this?
     
  2. SDN Members don't see this ad. About the ads.
  3. EnginrTheFuture

    EnginrTheFuture 2+ Year Member

    511
    27
    Nov 22, 2011

    There's quite the important negative sign missing in there :p
     

Share This Page