Bohr Model NEET Questions

Physics - Atoms and Nuclei

Bohr Model MCQ Questions


13.
If a 12.5 eV electron beam strikes hydrogen atoms in the ground state, the maximum value of n that can be excited is:
A.
n = 3
B.
n = 5
C.
n = 2
D.
n = 4
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ANSWER :
A. n = 3
14.
The total energy E and kinetic energy K of an electron in a hydrogen atom orbit are related as:
A.
E = K/2
B.
E = 2K
C.
E = K
D.
E = āˆ’K
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ANSWER :
D. E = āˆ’K
15.
The relation between potential energy U and total energy E of an electron in a hydrogen atom orbit is:
A.
U = E/2
B.
U = āˆ’E
C.
U = E
D.
U = 2E
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ANSWER :
D. U = 2E
16.
In the ground state of hydrogen atom, the kinetic energy of the electron is:
A.
+13.6 eV
B.
āˆ’13.6 eV
C.
āˆ’27.2 eV
D.
+27.2 eV
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ANSWER :
A. +13.6 eV
17.
In the ground state of hydrogen atom, the potential energy of the electron is:
A.
āˆ’27.2 eV
B.
āˆ’13.6 eV
C.
+13.6 eV
D.
+27.2 eV
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ANSWER :
A. āˆ’27.2 eV
18.
The radius of the nth Bohr orbit of hydrogen atom is proportional to:
A.
n
B.
1/nĀ²
C.
1/n
D.
nĀ²
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ANSWER :
D. nĀ²