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Standard XII
Physics
Angular Position of Fringes in Diffraction
in YDSE a fil...
Question
in YDSE a film ,refractive index 1.6 of thickness 0.01 mm is intriduced in the path of one of the two interfering beams . the centrel fringe moves to a position occupied by the 10th bright fringe earlier. the wavelength of wave
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Q.
In a
Y
D
S
E
, a thin film
(
μ
=
1.6
)
of thickness
0.01
mm
is introduced in the path of one of the two interfering beams. The central fringe moves to a position occupied by the
10
t
h
bright fringe earlier. The wave length of the wave is
Q.
A thin film
(
μ
=
1.6
)
of thickness
10
−
3
mm is introduced in the path of the one of the two interfering beams. The central fringe moves to a position occupied by the
10
t
h
bright fringe earlier. The wavelength of light is:
Q.
A thin film
(
μ
=
1.6
)
of thickness
10
−
3
mm is introduced in the path of the one of the two interfering beams. The central fringe moves to a position occupied by the
10
t
h
bright fringe earlier. The wavelength of light is:
Q.
In YDSE, source is red light of wavelength
7
×
10
−
7
m
. When a thin glass plate of refractive index 1.5 is put in the path of one of the interfering beams, the central bright fringe shifts by
10
−
3
m to the position previously occupied by the
5
t
h
bright fringe. Find the thickness of the plate. When the source is now changed to green light of wavelength
5
×
10
−
7
m
, the central fringe shifts to a position initially occupied by the
6
t
h
bright fringe due to red light. Find the refractive index of glass for the green light.
Q.
A thin sheet of glass (
μ
= 1.5) of thickness 6 micron introduced in the path of one of the interfering beams in a double slit experiment shifts the central fringe to a position previously occupied by fifth bright fringe. The the wavelength of light used is
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