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JEE Main 08 Apr 2018 Code A Solved Paper
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© examsnet.com
Question : 25
Total: 90
If the series limit frequency of the Lyman series is ,
v
L
then the series limit frequency of the Pfund series is:
25
v
L
16
v
L
v
L
16
v
L
25
Validate
Solution:
Series limit for Lyman series,
1
λ
=
R
(
1
1
2
−
1
∞
2
)
=
R
f
=
v
λ
f
=
C
λ
=
C
R
=
β
v
L
Series limit for pfund series,
1
λ
=
R
(
1
5
2
−
1
∞
2
)
=
R
25
f
=
C
λ
=
C
R
25
=
v
L
25
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