Explore BrainMass

Explore BrainMass

    Problems with Optics and Lenses

    Not what you're looking for? Search our solutions OR ask your own Custom question.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Hi. Can someone please show me how to do the following problem? Thank you.

    "A magnifying glass is a single convex lens with a focal length of f = +11.0 cm. (Assume the person using the magnifying glass has a near point of 25 cm and the magnifying glass is directly in front of the person's eyes.)

    (a) What is the angular magnification when this lens forms a (virtual) image at -infinity. (I've done this one. The answer is 2.27. But I can't figure out how to do the others.)

    (b) How far from the object should the lens be held?

    (c) What is the angular magnification when this lens forms a (virtual) image at the person's near point?

    (d) How far from the object should the lens be held in this case?

    © BrainMass Inc. brainmass.com March 4, 2021, 6:20 pm ad1c9bdddf
    https://brainmass.com/physics/optics/problems-with-optics-and-lenses-40406

    Solution Preview

    a) That is correct: M = 25 / 11 = 2.27

    b) For the best viewing, the object should be placed at the focal point so that the virtual image is at infintiy. That ...

    Solution Summary

    The solution provides step-by-step calculations for various optics and lens questions.

    $2.49

    ADVERTISEMENT