Physics Lesson 12.9.3 - Image Formation in Converging Lenses

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Welcome to our Physics lesson on Image Formation in Converging Lenses, this is the third lesson of our suite of physics lessons covering the topic of Lenses. Equation of Lenses. Image Formation of Lenses, you can find links to the other lessons within this tutorial and access additional physics learning resources below this lesson.

Image Formation in Converging Lenses

Converging lenses are very similar in concept to concave mirrors. Therefore, we have again six possible cases of image formation in converging lenses depending to the position of object in respect to the lens.

  1. The object is beyond the centre of curvature. In this case, the image is formed at the other side of lens, between focus and centre of curvature; it is diminished and inverted. The image is also real because it is produced from the two reflected rays and not from their extensions. Physics Tutorials: This image provides visual information for the physics tutorial Lenses. Equation of Lenses. Image Formation of Lenses
  2. The object is at centre of curvature. In this case, the image will form at the other centre of curvature; it has the same size as the object and is inverted. The image is real because it is produced from the two reflected rays and not from their extensions. Physics Tutorials: This image provides visual information for the physics tutorial Lenses. Equation of Lenses. Image Formation of Lenses
  3. The object is between centre of curvature and focus. The image is formed at the other side of lens, beyond the other centre of curvature. The image is magnified and inverted; it is real because is produced from the two reflected rays and not from their extensions. Physics Tutorials: This image provides visual information for the physics tutorial Lenses. Equation of Lenses. Image Formation of Lenses
  4. The object is at focus. In this case, there is no image as the refracted rays are parallel. Physics Tutorials: This image provides visual information for the physics tutorial Lenses. Equation of Lenses. Image Formation of Lenses
  5. The object is close to the lens than focus. In this case, the reflected rays diverge and therefore, we take their extension to build up the image. As a result, the image is at the same side to the object; it is enlarged, erect and virtual, as it is obtained by considering the rays' extensions. Physics Tutorials: This image provides visual information for the physics tutorial Lenses. Equation of Lenses. Image Formation of Lenses
  6. The object is at infinity. In this case, the image has no dimensions. It is a bright point at focus as all parallel rays coming from the object converge at focus. Physics Tutorials: This image provides visual information for the physics tutorial Lenses. Equation of Lenses. Image Formation of Lenses

You have reached the end of Physics lesson 12.9.3 Image Formation in Converging Lenses. There are 8 lessons in this physics tutorial covering Lenses. Equation of Lenses. Image Formation of Lenses, you can access all the lessons from this tutorial below.

More Lenses. Equation of Lenses. Image Formation of Lenses Lessons and Learning Resources

Optics Learning Material
Tutorial IDPhysics Tutorial TitleTutorialVideo
Tutorial
Revision
Notes
Revision
Questions
12.9Lenses. Equation of Lenses. Image Formation of Lenses
Lesson IDPhysics Lesson TitleLessonVideo
Lesson
12.9.1What Are Lenses? Types of Lenses
12.9.2Special Rays in Lenses
12.9.3Image Formation in Converging Lenses
12.9.4Image Formation in Diverging Lenses
12.9.5Equation of Lenses
12.9.6Magnification Produced by Lenses
12.9.7Aberration in Lenses
12.9.8Combined Systems of Lenses and Curved Mirrors

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