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Class 12
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Physics
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Wave Optics
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Young's Double Slit Experiment
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Displacement of Fringes Due to Glass Sla...
Displacement of Fringes Due to Glass Slab
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Problems Based on Young's Double Slit Experiment - I
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REVISE WITH CONCEPTS
Important Quantities Derivation from YDSE
Example
Definitions
Formulaes
>
Interference with Polychromatic Light
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Young's Doble Slit Experiment
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QUICK SUMMARY WITH STORIES
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
Young's Double Slit Experiment
3 mins
Interference and Young's Double Slit Experiment
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Measuring the Wavelength of Light Using Young's Experiment
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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
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A beam of light consisting of two wavelengths,
$650nm$
and
$520nm$
, 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
$650nm$
.(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
$0.28mm$
and the screen is at a distance of
$1.4m$
from the slits.
Medium
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The maximum intensity in Young's double slit experiment is
$I_{0}$
. Distance between the slits is
$d=5λ$
, 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
$D=10d$
?
Medium
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>
Two coherent monochromatic light beams of intensities
$I$
and
$4I$
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_{max}+I_{min}I_{max}−I_{min} $
will be
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
$I_{1}=12000A˚$
and
$I_{2}=10000A˚$
. 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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>