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AP and TS EAMCET Engineering Model Paper 14
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© examsnet.com
Question : 116
Total: 159
A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level then the frequency of the photon is
3.1
×
10
15
Hz
5.1
×
10
15
Hz
8.5
×
10
15
Hz
12.75
×
10
15
Hz
Validate
Solution:
1
λ
=
R
[
1
12
−
1
4
2
=
15
R
16
]
v
=
c
λ
=
15
R
16
=
3.1
×
10
15
Hz
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