WorksheetsInterference of light by division of wave front
Total questions: 24
Worksheet time: 13mins
The Coherent Sources have
Same wavelength
same frequency
constant or zero phase difference
All of above
Condition for good interference are
The two sources must be coherent
Amplitude of two waves must be same or nearly same
Sources must be monochoromatic sources
All of above
Energy at site of minimum interference ____
Is trasferred to the site of maxima
Doubled
maximum
None of above
The phase difference between any two points on a wavefront is
2π
2π
0
None of above
The wavelength 5893 Angstrom in vacuum of a light source in a liquid of refractive index 1.24 is
5663 A
4752 A
3035 A
6452 A
What will be the effect on the fringe width, if Young's double-slit experiment is immersed in the water of refractive index 1.33.
Increase
Decrease
Remain unchanged
None of above
What is condition of constructive interference
Path diffrence Δ= nλ
Path difference Δ = πλ
Path difference = 0
All of above
Two independent sources can produce interference
True
False
Which color travel faster in prism
Red
Green
Yellow
Blue
In the interference of white light, the fringe width of red color is approximately _____ then violet.
Half
Double
same
triple
which two of the following are methods to produce coherent sources?
division of wavelength
division of amplitude
division of wavefront
division of frequency
which of the colour (wavelength) is having highest wavelength in visible light spectrum?
Blue
red
violet
green
Interference of light is evidence that:
the speed of light is very large
light is a transverse wave
light is electromagnetic in character
light is a wave phenomenon
In a Young's double-slit experiment, the slit separation is doubled. To maintain the same fringe spacing on the screen, the screen-to-slit distance D must be changed to:
D/2
D 2
2D
4D
Two light sources are said to be coherent if they
are of the same frequency.
are of the same frequency, and maintain a constant phase difference.
are of the same amplitude, and maintain a constant phase difference.
are of the same frequency and amplitude.
In biprism when fringes are obtained by using white light, the central white fringe is known as____________ fringe.
first order
second order
nearest order
zeroth order
In the biprism experiment the eyepiece is placed at a distance of 1.2 m from the source. The distance between the virtual sources was found to be 7.5×104 m. The wavelength of light, if the eyepiece is to be moved through a distance of 1.888 cm for 20 fringes will be,
5890 A°
5896 A°
5900 A°
5893 A°
Q-1 what are interference
superposition of waves
reflection
scattering
transmission
Q-2 Single source can not produces interference
Yes
No
Q- The fig is Biprism.
Yes
No
In Fresnel’s biprism experiment, the coherent sources are obtained by
(a)
In llyod's Mirror experiment, the coherent sources are obtained by
(a)
Central Fringe in Lloyd's mirror, when screen is placed at the end of mirror is
(a)
When light reflected from a denser medium, it suffer a phase change of
(a)
