Unit: Optics
Year: 1995 Question#: 91
Question: Which type of images can be formed by a converging lens?
(1 ) real images, only
(2 ) virtual images, only
(3 ) both real and virtual images
(4 ) neither real nor virtual images
What is this question really asking?
Explanation by: Iain O.
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Answer 1
real images, only
INCORRECT
Reason: a converging lens can form both real and virtual images depending on where the object is placed relative to the focal length. If an object is placed within the focal length then a virtual image is formed.
Answer 2
virtual images, only
INCORRECT
Reason: a converging lens can form both real and virtual images depending on where the object is placed relative to the focal length. If an object is placed outside of the focal length then a real image is formed
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both real and virtual images
CORRECT
Reason: both real and virtual images can be created by a converging lens depending on where the object is relative to the focal point. If the object is within the focal point then a virtual image is formed. If the object is outside the focal point then a real image is formed.
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Answer 4
retype answer 4 here
INCORRECT
Reason: all lenses create some sort of image. return to top
What is this question really asking? What types of images can be formed by converging lenses?
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