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Questions and Answers
Which type of lens can form a virtual image smaller than the object?
Which type of lens can form a virtual image smaller than the object?
- Concave lens (correct)
- Concave mirror
- Convex lens
- Plane mirror
When we put a glass piece on a printed page, the image of the prints on the page has the same size when viewed from the glass piece. What is the glass piece?
When we put a glass piece on a printed page, the image of the prints on the page has the same size when viewed from the glass piece. What is the glass piece?
- Prism
- Concave lens
- Convex lens
- Glass slab (correct)
Which of the following is a diverging lens?
Which of the following is a diverging lens?
- Plane mirror
- Convex lens
- None of these
- Concave lens (correct)
If an image formed by a lens is always diminished and located between the focal point and the object, what type of lens is it?
If an image formed by a lens is always diminished and located between the focal point and the object, what type of lens is it?
If a convex lens is thin, what can be said about its focal length?
If a convex lens is thin, what can be said about its focal length?
Flashcards
What type of lens forms a smaller virtual image?
What type of lens forms a smaller virtual image?
A concave lens forms an upright, virtual image that is smaller than the object.
What is a glass piece that doesn't change image size?
What is a glass piece that doesn't change image size?
A glass slab doesn't magnify or shrink the image, it only shifts the image slightly.
Which lens is a 'diverging' lens?
Which lens is a 'diverging' lens?
A diverging lens makes light rays spread out, causing the image to appear smaller.
What kind of lens makes images smaller and closer than the object?
What kind of lens makes images smaller and closer than the object?
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How does a convex lens's thickness affect its focal length?
How does a convex lens's thickness affect its focal length?
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Study Notes
Lenses and Images
- A concave lens can form a virtual image smaller than the object.
- A glass piece that shows an image of the same size when viewed from it is a plane glass or a plane mirror.
- A diverging lens is a concave lens.
- A lens that always forms a diminished image located between the focal point and the object is a concave lens.
- A thin convex lens has a long focal length.
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