Help Geometric Objects Thin lenses Problem

  • Thread starter Thread starter SugarBomb5
  • Start date Start date
  • Tags Tags
    Geometric Lenses
Click For Summary
SUMMARY

The discussion centers on solving a geometric optics problem involving a thin lens. The image of the object is projected onto a wall 2.00 meters away and is three times the height of the object. To find the object distance and the focal length of the lens, one must apply the lens formula and magnification relationships. Specifically, the magnification (M) is defined as the ratio of the image height to the object height, and the thin lens formula relates the object distance (d_o), image distance (d_i), and focal length (f).

PREREQUISITES
  • Understanding of thin lens formula (1/f = 1/d_o + 1/d_i)
  • Knowledge of magnification formula (M = h_i/h_o = -d_i/d_o)
  • Familiarity with geometric optics concepts
  • Basic algebra skills for solving equations
NEXT STEPS
  • Review the thin lens equation and its applications in optics
  • Study the concept of magnification in optical systems
  • Practice solving problems involving image formation by lenses
  • Explore real-world applications of thin lenses in photography and vision correction
USEFUL FOR

Students studying physics, particularly those focusing on optics, educators teaching geometric optics, and anyone interested in understanding the principles of lens behavior and image formation.

SugarBomb5
Messages
1
Reaction score
0
I really need help with this problem. Give me at least a hint on how to solve it.

You are standing in front of a lens that projects an image of you onto a wall 2.00m on the other side of the lens. This image is three times your height.

A)
How far are you from the lens?

B)
What is the focal length of the lens?

Your help will be much appreciated :'0
 
Physics news on Phys.org
Have you learnt:
(i) The relationship between image size and object size?
(ii) The relationship between image distance, object distance and focal length for a thin lens?

If not, I recommend you review your notes/textbook.
 
The problem tells you what the magnification is.
 

Similar threads

Inserting thick lenses into a thin lens system and deducing values
  • · Replies 1 ·
Replies
1
Views
2K
Problem on thermal radiation and lenses
  • · Replies 3 ·
Replies
3
Views
2K
What is the focal point of a lens in a geometrical optics problem?
  • · Replies 4 ·
Replies
4
Views
1K
Geometric optics: Thin lense equation
  • · Replies 3 ·
Replies
3
Views
2K
Understanding Two Convex Lenses: Ray Diagram and Focal Lengths
  • · Replies 3 ·
Replies
3
Views
3K
Contact Lenses Optics Problem (Two-Parts)
  • · Replies 2 ·
Replies
2
Views
4K
Finding the Image Location for Two Lenses in Contact
  • · Replies 2 ·
Replies
2
Views
2K
Convergent lenses and calculating image position
  • · Replies 2 ·
Replies
2
Views
2K
Combination of thin lens and concave mirror
  • · Replies 2 ·
Replies
2
Views
2K
Algebraic Explanation of Image Formation in Convex Lenses
  • · Replies 1 ·
Replies
1
Views
1K