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1
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
To get three images of a single object, one should have two plane mirrors at an angle of
A
$${60^ \circ }$$
B
$${90^ \circ }$$
C
$${120^ \circ }$$
D
$${30^ \circ }$$
2
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
If two mirrors are kept at $${60^ \circ }$$ to each other, then the number of images formed by them is
A
$$5$$
B
$$6$$
C
$$7$$
D
$$8$$
3
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
An astronomical telescope has a large aperture to
A
reduce spherical aberration
B
have high resolution
C
increase span of observation
D
have low dispersion
4
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following is used in optical fibres?
A
total internal reflection
B
scattering
C
diffracttion
D
refraction
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