Unit: Optics
Year: 1996 Question#: 92
Question: The diagram at the right represents an object placed two focal lengths from a converging lens. At which point will the image be located?
(1 ) A
(2 ) B
(3 ) C
(4 ) D
What is this question really asking?
Explanation by: LJG
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Answer 1
A
INCORRECT
It is possible for an virtual image to form here, but only if the object is placed between the focal point and the lens. return to top
Answer 2
B
INCORRECT
The image cannot be at the same place as the lens. return to top
Answer 3
C
INCORRECT
An real image could form close to the focal point, but only if the object is very far away. return to top
Answer 4
D
CORRECT
The rays end up showing an image at D.
return to top What's this question really asking?
The question is asking you to draw the rays into the diagram and tell where the image appears. return to top
