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Class 12
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Physics
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Wave Optics
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Superposition and Interference
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Equation of Resultant Wave using Superpo...
Equation of Resultant Wave using Superposition Principle
16 Mins
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NEXT VIDEOS
Equation of Resultant Wave using Superposition Principle - Cases
9 mins
Intensity of superimposing wave
8 mins
Constructive interference
16 mins
Destructive interference
8 mins
Young's Double Slit Experiment
15 mins
REVISE WITH CONCEPTS
Principle of Superposition of Waves
Example
Definitions
Formulaes
>
Analysing Superposition Principle
Example
Definitions
Formulaes
>
Superposition of Light Rays
Example
Definitions
Formulaes
>
QUICK SUMMARY WITH STORIES
Intensity of Superimposing Wave
2 mins
Destructive Interference in Sound
3 mins
Superposition of Waves
3 mins
Equation of Resultant wave using superimposition principle
3 mins
Equation of Resultant Wave using Superposition Principle - Cases
3 mins
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Important Questions
What is the path difference for destructive interference?
Medium
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>
The path difference between two interfering waves at a point on the screen is
$λ/6$
. The ratio of intensity at the point and that the central bright fringe will be (Assume that internally due to each slit in same).
Medium
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>
Phase difference
$(ϕ)$
and path difference
$(δ)$
are related by :
Medium
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>
Two waves having the intensities in the ratio 9 : 1 produce interference. The ratio of maximum to minimum intensity is equal to
Medium
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>
A parallel beam of sodium light of wavelength 5890
$A0$
is incident on a thin glass plate of refractive index 1.5 such that the angle of refraction in the plate is
$60_{o}$
. The smallest thickness of the plate which will make it dark by reflection:
Medium
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>
Two coherent sources of intensity ratio
$9:4$
produce interference. The intensity ratio of maxima and
minima of the interference pattern is:
Medium
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>
In Young's double slit experiment ,wavelength of light is
$6000A˚$
The the phase difference between the light waves reaching the third bright fringe from the central fringe will be:
Medium
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Here, figure shows P and Q are two equally intense coherent sources emitting radiation of wavelength 20 m. The separation PQ is 5.0 m and phase of Q is ahead of that of P by
$90_{o}$
. A, B and C are three distant points of observation equidistant from the mid-point of PQ. The intensity of radiations at A, B and C in ratio form will be :
Hard
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Two waves of intensities
$I$
and
$4I$
superimpose. The minimum and maximum intensities will respectively be
Medium
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>
For constructive interference, the path difference between two waves must be
Medium
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>