A lens produces a magnification of -0.5. is this converging or diverging lens? If the focal length of the lens is 6 cm, draw ray diagram showing image formation in this case.
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Answer:
Refraction and the Ray Model of Light - Lesson 5 - Image Formation by Lenses
Diverging Lenses - Object-Image Relations
The Anatomy of a Lens
Refraction by Lenses
Image Formation Revisited
Converging Lenses - Ray Diagrams
Converging Lenses - Object-Image Relations
Diverging Lenses - Ray Diagrams
Diverging Lenses - Object-Image Relations
The Mathematics of Lenses
Previously in Lesson 5, ray diagrams were constructed in order to determine the location, size, orientation, and type of image formed by double concave lenses (i.e., diverging lenses). The ray diagram constructed earlier for a diverging lens revealed that the image of the object was virtual, upright, reduced in size and located on the same side of the lens as the object. But will these always be the characteristics of an image produced by a double concave lens? Can convex lenses ever produce real images? Inverted images? Magnified Images? To answer these questions, we will look at three different ray diagrams for objects positioned at different locations along the principal axis. The diagrams are shown below. (Note that only two sets of incident and refracted rays were used in the diagram in order to avoid overcrowding the diagram with rays.)
The diagrams above show that in each case, the image is
located on the object' side of the lens
a virtual image
an upright image
reduced in size (i.e., smaller than the object)