30 Questions
In Young's Double Slit Experiment, what is the nature of the light that falls on the two narrow slits S1 and S2?
Monochromatic light (single wavelength)
What is the result of the superposition of waves from two coherent sources in Young's Double Slit Experiment?
An interference pattern with maxima and minima
What happens to the energy in the process of interference in Young's Double Slit Experiment?
Energy is redistributed in the form of maxima and minima
What is the ratio of the resultant intensity at point P and point Q if two waves having equal intensity meet at these points with path differences Δ1 and Δ2 respectively?
cos²(πΔ1/λ) / cos²(πΔ2/λ)
What is the condition for constructive interference in Young's Double Slit Experiment?
Path difference is an integer multiple of λ
What is the condition for maximum fringe visibility in an interference pattern?
Imin = 0
In Young's Double Slit Experiment, what is the path difference between the waves reaching at point P?
D(1 + d2/D2)
What is the condition for a dark fringe at point P in Young's Double Slit Experiment?
Δ = (2n - 1)λ/2
What is the characteristic of a thin film that exhibits interference effects?
Its thickness is comparable to the wavelength of incident light
What is the relationship between the shift of zero-order maxima and the shift of nth order maxima?
They are independent of wavelength
What is the characteristic of the central fringe in a Young's Double Slit Experiment?
It is always bright
What happens to the fringe pattern when the slit widths are unequal?
The minima will not be complete dark
What is the condition for maxima to occur at a point P on the screen?
Δ = nλ
What happens when the two slits are illuminated with different colors of light?
No interference pattern is observed on the screen
What is the path difference between the interfering waves meeting at a point P on the screen?
xd = d sinθ
When do the waves meet a point with maximum light?
When the waves meet a point with same phase
What is the condition for destructive interference?
Phase difference between the waves at the point of observation is 180 degrees or (2n-1)π
What is the resultant amplitude at the point of observation when the waves meet with same phase?
I1 + I2 + 2√I1I2
What is the condition for minimum intensity at the point of observation?
Path difference between the waves at the point of observation is (2n-1)λ/2
What is the relation between the maximum intensity and the intensity of individual waves?
I_max = 2I0
What is the minimum thickness of the film required for visible interference?
10000 Å
What is the condition for constructive interference in reflected light in a thin film?
Δ = (2n ± 1) λ/2
What is the purpose of the plane glass plate in Lloyd's Mirror?
To act as a mirror
What is the nature of the sources formed in Lloyd's Mirror?
Coherent sources
What is the direction of incidence of light on the plane glass plate in Lloyd's Mirror?
Grazing incidence
What is the primary reason for the condition of monochromatic light in Young's Double Slit Experiment?
To eliminate overlapping of patterns
What is the effect of placing a thin film of mica or glass in the path of one of the waves?
The fringe pattern shifts upward or downward
What is the condition for observing sustained interference in Young's Double Slit Experiment?
The initial phase difference between the interfering waves must remain constant
What is the significance of the condition that the sources must be close to each other in Young's Double Slit Experiment?
To ensure that the eye can resolve fringes
What is the relationship between the shift of fringe pattern and the order of fringe?
The shift is independent of the order of fringe
Quiz about the principles of interference of light waves, including the calculation of resultant intensity and average intensity, and the concept of maxima and minima.
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