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JEE Mains Previous Years Questions with Solutions

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1

AIEEE 2003

MCQ (Single Correct Answer)
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
$${30^ \circ }$$

Explanation

When $$\theta = {90^ \circ }$$ then $${{360} \over \theta } = {{360} \over {90}} = 4$$

is an even number. The number of images formed is given by

$$n = {{360} \over \theta } - 1 = {{360} \over {90}} - 1 = 4 - 1 = 3$$
2

AIEEE 2003

MCQ (Single Correct Answer)
The image formed by an objective of a compound microscope is
A
virtual and diminished
B
real an diminished
C
real and enlarged
D
virtual and enlarged

Explanation

A real, inverted and enlarged image of the object is formed by the objective lens of a compound microscope.
3

AIEEE 2003

MCQ (Single Correct Answer)
To demonstrate the phenomenon of interference, we require two sources which emit radiation
A
of nearly the same frequency
B
of the same frequency
C
of different wavelengths
D
of the same frequency and having a definite phase relationship

Explanation

For the phenomenon of interference we require two sources of light of same frequency and having a definite phase relationship (a phase relationship that does not change with time)
4

AIEEE 2002

MCQ (Single Correct Answer)
which of the following is used in optical fibres?
A
total internal reflection
B
scattering
C
diffracttion
D
refraction

Explanation

In an optical fibre, light is sent through the fibre without any loss by the phenomenon of total internal reflection as shown in the figure.

Questions Asked from Ray & Wave Optics

On those following papers in MCQ (Single Correct Answer)
Number in Brackets after Paper Indicates No. of Questions
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AIEEE 2003 (3)
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AIEEE 2002 (5)
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