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Lenses
Test Description: Characteristics of converging lens
Instructions: Answer all questions to get your test result.
1) Lenses always
A
emerges rays of light
B
refracts and reflects rays of light
C
None of the above choices
D
reflects rays of light
2) Converging lens :
A
Thick at center thin at edges
B
thick at center and edges
C
thin at center thick at edges
D
thin at center and edges
3) Object point focus F is in
A
within the direction of light
B
at the center of lens
C
None of the above choices
D
other direction of light
4) The center of lens is called
A
optical center
B
image focus point
C
point center
D
object focus point
5) F' is called
A
Image focus point
B
object focus point
C
object point
D
optical center
6) The Horizontal line passing through the center of lens is called
A
axis of lens
B
line of symmetry
C
None of the above choices
D
Optical axis
7) Any ray passing through the optical center of lens emerges:
A
emerges away from the lens
B
emerges passing through F'
C
None of the above choices
D
without deviation
8) An incident ray hits the lens parallel to optical axis emerges :
A
without deviation
B
away from the lens
C
None of the above choices
D
passing through F'
9) An incident ray hits the lens passing through F emerges :
A
passing through F'
B
without deviation
C
Parallel to optical axis
D
None of the above choices
10) The converging lens give real image for areal object except one case when the object is between:
A
Between F and O
B
f and 2f
C
greatr than f
D
equals to f
*select an answer for all questions
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