Talk:QB/a25GeometricOptics vision

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*_Quizbank_*[edit]

*_Quiz_*[edit]

1

Which lens has the shorter focal length?

Ray drawing eye schematic.svg
Ray drawing eye schematic01.svg
They have the same focal lengh.

2

Ray drawing eye schematic01.svg If this represents the eye looking at an object, where is this object?

One focal length in front of the eye
Two (of the other answers) are true
very far away
at infinity
directly in front of the eye (almost touching)

3

After passing through a the lens of a camera or the eye, the focal point is defined as where the rays meet.

true
false

4

Ray drawing eye schematic01.svg Mr. Smith is gazing at something as shown in the figure to the left. Suppose he does not refocus, but attempts to stare at the star shown in the figures below. Which diagram depicts how the rays from the star would travel if he does not refocus?

Ray drawing eye schematic alternate.svg
Ray drawing eye Wrong Answer.svg
Ray drawing eye schematic02.svg


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