Energy Levels and Hydrogen Spectrum NEET Questions

Physics - Atoms and Nuclei

Energy Levels and Hydrogen Spectrum MCQ Questions


13.
What happens to the energy difference between levels as n increases?
A.
It increases
B.
It decreases
C.
It remains constant
D.
It fluctuates
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ANSWER :
B. It decreases
14.
Which spectral series corresponds to transitions ending at n=3?
A.
Paschen series
B.
Lyman series
C.
Brackett series
D.
Pfund series
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ANSWER :
A. Paschen series
15.
What is the Rydberg formula used for?

NEET - 2019

A.
Calculating the speed of electrons
B.
Determining the wavelength of spectral lines
C.
Calculating atomic radius
D.
Determining nuclear charge
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ANSWER :
B. Determining the wavelength of spectral lines
16.
The Rydberg constant is associated with which fundamental aspect of hydrogen?
A.
Electron transitions
B.
Proton charge
C.
Nuclear mass
D.
Spin quantum number
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ANSWER :
A. Electron transitions
17.
What is the energy of an electron in the n=2 state of hydrogen?
A.
-1.51 eV
B.
-3.4 eV
C.
-0.85 eV
D.
-13.6 eV
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ANSWER :
B. -3.4 eV
18.
What is the wavelength of the first Lyman series line (Lyman-α) in hydrogen?
A.
122 nm
B.
250 nm
C.
434 nm
D.
656 nm
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ANSWER :
A. 122 nm