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Standard XIII
Physics
Characteristics of Bohr's Atomic Model
The ratio of ...
Question
The ratio of the energies of the hydrogen atom in its first to second excited state is
A
1
4
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B
4
9
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C
9
4
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D
4
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Solution
The correct option is
C
9
4
First excited state i.e. second orbit (n = 2)
Second excited state i.e. third orbit (n = 3)
∵
E
=
−
13.6
n
2
⇒
E
2
E
3
=
(
3
2
)
2
=
9
4
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1
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