Types of Lenses
Converging Lenses
Diverging Lenses
Focal Lengths are:
Focal Lengths are:
Virtual Image
Real Image
Lens Diagram Requirements
1.
2.
3.
Lens Diagram Examples (Converging … convex lenses)
do > f
Lens Diagram Examples (Converging … convex lenses)
Lens Diagram Examples (Diverging …. Concave lenses)
Equations:
do < f
Describing Images….
Real vs. Virtual
Upright or Inverted
Larger vs. Smaller
Real:_______ Virtual:________
Upright:_______ Inverted:________
Larger:_______ Smaller:________
1. Draw a ray diagram for the situation below. Describe the image formed.
2. Calculate the di (image distance)and the magnification in order to describe the situation above assuming the
object is 1.2 m from the diverging lenses. The lens has a focal length of 0.5m.
3. Draw a ray diagram for the situation below. Describe the image formed. DRAW IT ON A SEPARATE PIECE OF
PAPER TOO YOU WILL BE HANDING IT IN NEXT CLASS
4. Calculate the di (image distance)and the magnification in order to describe the situation above assuming the
object is 2.4 m from the converging lens. The lens has a focal length of 1.2 m. Online you will be asked to enter
the value for do and M and to describe the three characteristics of the image.
Describing Images….
Real vs. Virtual
Upright or Inverted
Larger vs. Smaller
Real:_______ Virtual:________
Upright:_______ Inverted:________
Larger:_______ Smaller:________
1. Draw a ray diagram for the situation below. Describe the image formed.
2. Calculate the di (image distance)and the magnification in order to describe the situation above assuming the
object is 1.2 m from the diverging lenses. The lens has a focal length of 0.5m.
3. Draw a ray diagram for the situation below. Describe the image formed. DRAW IT ON A SEPARATE PIECE OF
PAPER TOO YOU WILL BE HANDING IT IN NEXT CLASS
4. Calculate the di (image distance)and the magnification in order to describe the situation above assuming the
object is 3.7 m from the converging lens. The lens has a focal length of 1.5 m. Online you will be asked to enter
the value for do and M and to describe the three characteristics of the image.
Describing Images….
Real vs. Virtual
Upright or Inverted
Larger vs. Smaller
Real:_______ Virtual:________
Upright:_______ Inverted:________
Larger:_______ Smaller:________
1. Draw a ray diagram for the situation below. Describe the image formed.
2. Calculate the di (image distance)and the magnification in order to describe the situation above assuming the
object is 1.2 m from the diverging lenses. The lens has a focal length of 0.5m.
3. Draw a ray diagram for the situation below. Describe the image formed. DRAW IT ON A SEPARATE PIECE OF
PAPER TOO YOU WILL BE HANDING IT IN NEXT CLASS
4. Calculate the di (image distance)and the magnification in order to describe the situation above assuming the
object is 4.5 m from the converging lens. The lens has a focal length of 2.0 m. Online you will be asked to enter
the value for do and M and to describe the three characteristics of the image.
Describing Images….
Real vs. Virtual
Upright or Inverted
Larger vs. Smaller
Real:_______ Virtual:________
Upright:_______ Inverted:________
Larger:_______ Smaller:________
1. Draw a ray diagram for the situation below. Describe the image formed.
2. Calculate the di (image distance)and the magnification in order to describe the situation above assuming the
object is 1.2 m from the diverging lenses. The lens has a focal length of 0.5m.
3. Draw a ray diagram for the situation below. Describe the image formed. DRAW IT ON A SEPARATE PIECE OF
PAPER TOO YOU WILL BE HANDING IT IN NEXT CLASS
4. Calculate the di (image distance)and the magnification in order to describe the situation above assuming the
object is 1.8 m from the converging lens. The lens has a focal length of 0.5 m. Online you will be asked to enter
the value for do and M and to describe the three characteristics of the image.