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Standard XII
Physics
Optical Path Length
A monochromat...
Question
A monochromatic light passes through a glass slab (μ=32) of thickness 90 cm in time t1. If it takes a time t2 to travel the same distance through water (μ=43). The value of (t1−t2) is
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Q.
A monochromatic light passes through a glass slab
(
μ
=
3
2
)
a thickness
90
c
m
in time
t
1
. If it takes
t
2
to travel the same distance through water
(
μ
=
4
3
)
. The value of
(
t
1
−
t
2
)
is :
Q.
Light takes time
t
1
to travel a distance
x
1
in vacuum and the same light takes time
t
2
to travel a distance
x
2
in a medium. The critical angle for that medium is
Q.
A boat takes
t
1
time while going downstream between two fixed points
A
and
B
, and takes
t
2
time while going upstream through the same distance. If river does not flow, then the time taken by the boat to cover the same distance is
Q.
Light takes time
t
1
to travel a distance
x
1
in rarer medium(
M
1
) and the same light takes time
t
2
to travel a distance
x
2
in a relatively denser medium(
M
2
). The value of critical angle when light goes from medium
M
2
to medium
M
1
is :
Q.
When the same monochromatic ray of light travels through glass slab and through water, the number of waves in glass slab of thickness
6
c
m
is same as in water column of height
7
c
m
. If refractive index of glass is
1.5
then refractive index of water is :
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