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Wave Optics
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Young's Double Slit Experiment
Young's Double Slit Experiment
Revise with Concepts
Superposition of Light Rays
Example
Definitions
Formulaes
>
Positions of Fringes in Double Slit Experiment, Fringe Width
Example
Definitions
Formulaes
>
Coherent and Incoherent Source
Example
Definitions
Formulaes
>
Interference and Coherent Sources
Example
Definitions
Formulaes
>
Young's Double Slit Experiment
Example
Definitions
Formulaes
>
Important Quantities Derivation from YDSE
Example
Definitions
Formulaes
>
Interference with Polychromatic Light
Example
Definitions
Formulaes
>
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Learn with Videos
Introduction to Interference of Light
12 mins
Equation of Resultant Wave using Superposition Principle
15 mins
Young's Double Slit Experiment
15 mins
Introduction to Coherent and Incoherent Sources
5 mins
Minimum and Maximum Intensity in YDSE
8 mins
Displacement of Fringes Due to Glass Slab
8 mins
Quick Summary With Stories
Introduction to Coherent and Incoherent Sources
2 mins
Problems on Intensity of Coherent Source
2 mins
Interference With Coherent Sources
3 mins
Young's Double Slit Experiment
3 mins
Interference and Young's Double Slit Experiment
3 mins
Measuring the Wavelength of Light Using Young's Experiment
3 mins
Minimum and Maximum Intensity in Young's Double Slit Experiment
3 mins
Displacement of Fringes Due to Glass Slab
3 mins
Path Difference by a Slab and Shifting of Fringes in YDSE
3 mins
Problems Based on Young's Double Slit Experiment - Angular Fringe Width
3 mins
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Important Questions
In a double slit experiment, the two slits are 1 mm apart and the screen is place 1 m away. A monochromatic light of wavelength 500 nm is used. What will be the width of each slit for obtaining ten maxima of double slit within the central maxima of single slit pattern?
Medium
NEET
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A beam of light consisting of two wavelengths,
6
5
0
n
m
and
5
2
0
n
m
, is used to obtain interference fringes in a Young's double-slit experiment.(a) Find the distance of the third bright fringe on the screen from the central maximum for wavelength
6
5
0
n
m
.(b) What is the least distance from the central maximum where the bright fringes due to both the wavelengths coincide? The distance between the two slits is
0
.
2
8
m
m
and the screen is at a distance of
1
.
4
m
from the slits.Â
Medium
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>
The maximum intensity in Young's double slit experiment is
I
0
​
. Distance between the slits is
d
=
5
λ
, where
λ
is the wavelength of monochromatic light used in the experiment. What will be the intensity of light in front of one of the slits on a screen at a distance
D
=
1
0
d
?
Medium
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>
Two coherent monochromatic light beams of intensities
I
and
4
I
are superposed. The maximum and minimum possible resulting intensities are :
Medium
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>
Derive the expression for the fringe width in a Young's double slit experiment. How will the fringe width change if (i) separation between the slits is increased (ii) screen is moved away from the plane of the slits.
Easy
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>
In a Youngs double-slit experiment, the slits are separated by 0.28 mm and the screen is placed 1.4 m away. The distance between the central bright fringe and the fourth bright fringe is measured to be 1.2 cm. Determine the wavelength of light used in the experiment.
Medium
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>
The interference pattern is  obtained with two coherent light source of intensity ratio n. In the interference pattern, the ratio
I
m
a
x
​
+
I
m
i
n
​
I
m
a
x
​
−
I
m
i
n
​
​
will be
Â
Hard
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In Young's double slit experiment, the fringe width is found to be
0
.
4
mm. If the whole apparatus is immersed in water of refractive index
(
4
/
3
)
, without disturbing the geometrical arrangement, what is the new fringe width?
Hard
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Derive the expression for the intensity at a point where interference of light occurs. Arrive at the conditions for the maximum and zero intensity.
Medium
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>
In Young's double slit experiment, the slits are 2mm apart are illuminated by photons of two wavelengths
I
1
​
=
1
2
0
0
0
A
Ëš
and
I
2
​
=
1
0
0
0
0
A
Ëš
. at what minimum distance from the common central bright fringe on the screen 2m from the slit will a bright fringe from one interference pattern coincide with a bright fringe from the other?
Hard
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>