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Tardigrade
Question
Physics
If R is the Rydberg Constant in cm -1, then hydrogen atom does not emit any radiation of wave-length in the range of
Q. If
R
is the Rydberg Constant in
c
m
−
1
, then hydrogen atom does not emit any radiation of wave-length in the range of
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202
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A
R
1
to
3
R
4
c
m
B
5
R
7
to
5
R
19
c
m
C
R
4
to
5
R
36
c
m
D
R
9
to
7
R
144
c
m
Solution:
we know that
λ
1
=
R
[
n
1
2
1
−
n
2
2
1
]
n
1
=
1
,
n
2
=
2
λ
1
=
R
[
1
−
4
1
]
λ
=
3
R
4
(maximum)
n
1
=
1
,
n
2
=
∞
λ
=
R
1
(minimum)
R
1
to
3
R
4