Q. No.Match List-I with List-II
Choose the correct answer from the options given below:
| List-I (Series) |
List-II (Wave number in cm–1) |
||
| A. | Balmer series | I. | \( R\left(\dfrac{1}{1^2}-\dfrac{1}{n^2}\right) \) |
| B. | Lyman series | II. | \( R\left(\dfrac{1}{4^2}-\dfrac{1}{n^2}\right) \) |
| C. | Brackett series | III. | \( R\left(\dfrac{1}{5^2}-\dfrac{1}{n^2}\right) \) |
| D. | Pfund series | IV. | \( R\left(\dfrac{1}{2^2}-\dfrac{1}{n^2}\right)\) |
Choose the correct answer from the options given below:
| 1. | A-I, B-IV, C-III, D-II |
| 2. | A-II, B-III, C-IV, D-I |
| 3. | A-IV, B-I, C-II, D-III |
| 4. | A-III, B-II, C-I, D-IV |
Subtopic: Spectral Series |
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From NCERT
NEET - 2024
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The spectral series which corresponds to the electronic transition from the levels \(\mathrm{n}_{2}=5,6,\ldots \) to the level \(\mathrm{n}_{1}=4\mathrm~\) is:
| 1. | Pfund series |
| 2. | Brackett series |
| 3. | Lyman series |
| 4. | Balmer series |
Subtopic: Spectral Series |
74%
From NCERT
NEET - 2024
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In which of the following systems will be wavelength corresponding to \(n=3\) to \(n=1\) be minimum?
| 1. | hydrogen atom | 2. | deuterium atom |
| 3. | singly ionized helium | 4. | doubly ionized lithium |
Subtopic: Spectral Series |
77%
From NCERT
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Light having the wavelength equal to the first line of the Lyman series is incident on a metal having a work function of \(6\) eV. The energy of the fastest photo-electron emitted is:
1. \(7.6\) eV
2. \(4.2\) eV
3. \(2.1\) eV
4. \(0.8\) eV
1. \(7.6\) eV
2. \(4.2\) eV
3. \(2.1\) eV
4. \(0.8\) eV
Subtopic: Spectral Series |
65%
From NCERT
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A set of atoms in an excited state decays
| 1. | in general to any of the states with lower energy |
| 2. | into a lower state only when excited by an external electric field |
| 3. | all together simultaneously into a lower state |
| 4. | to emit photons only when they collide |
Subtopic: Spectral Series |
54%
From NCERT
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The diagram shown represents different transitions of electron \((\mathrm{A,B,C,D})\) between the energy level with the energies mentioned. Among the shown transitions which transition will generate photon of wavelength \(124.1~\text{nm}\)?
(\(hc=1241~\text{eV-nm}\)).
1. \(\mathrm{A}\)
2. \(\mathrm{B}\)
3. \(\mathrm{C}\)
4. \(\mathrm{D}\)
(\(hc=1241~\text{eV-nm}\)).
1. \(\mathrm{A}\)
2. \(\mathrm{B}\)
3. \(\mathrm{C}\)
4. \(\mathrm{D}\)
Subtopic: Spectral Series |
89%
From NCERT
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Some energy levels of a molecule are shown in the figure with their wavelengths of transitions. Then:
| 1. | \(\lambda_{3}>\lambda_{2},\lambda_{1}=2\lambda_{2}\) |
| 2. | \(\lambda_{3}>\lambda_{2},\lambda_{1}=4\lambda_{2}\) |
| 3. | \(\lambda_{1}>\lambda_{2},\lambda_{2}=2\lambda_{3}\) |
| 4. | \(\lambda_{2}>\lambda_{1},\lambda_{2}=2\lambda_{3}\) |
Subtopic: Spectral Series |
52%
From NCERT
NEET - 2024
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Match List I with List II.
Choose the correct answer from the options given below:
| List I (Spectral Lines of Hydrogen for transitions from) |
List II (Wavelength (nm)) |
||
| \(\mathrm{A.}\) | \(n_2=3\) to \(n_1=2\) | \(\mathrm{I.}\) | \(410.2\) |
| \(\mathrm{B.}\) | \(n_2=4\) to \(n_1=2\) | \(\mathrm{II.}\) | \(434.1\) |
| \(\mathrm{C.}\) | \(n_2=5\) to \(n_1=2\) | \(\mathrm{III.}\) | \(656.3\) |
| \(\mathrm{D.}\) | \(n_2=6\) to \(n_1=2\) | \(\mathrm{IV.}\) | \(486.1\) |
Choose the correct answer from the options given below:
| 1. | \(\mathrm{A - III, B - IV, C - II, D - I}\) |
| 2. | \(\mathrm{A - IV, B - III, C - I, D - II}\) |
| 3. | \(\mathrm{A - I, B - II, C - III, D - IV}\) |
| 4. | \(\mathrm{A - II, B - I, C - IV, D - III}\) |
Subtopic: Spectral Series |
53%
From NCERT
NEET - 2024
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Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
| Statement I: | Atoms are electrically neutral as they contain equal number of positive and negative charges. |
| Statement II: | Atoms of each element are stable and emit their characteristic spectrum. |
In the light of the above statements, choose the most appropriate answer from the options given below:
| 1. | Both Statement I and Statement II are incorrect. |
| 2. | Statement I is correct but Statement II is incorrect. |
| 3. | Statement I is incorrect but Statement II is correct. |
| 4. | Both Statement I and Statement II are correct. |
Subtopic: Spectral Series |
From NCERT
NEET - 2024
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A difference of \(2.3\) eV separates two energy levels in an atom. What is the frequency of radiation emitted when the atom makes a transition from the upper level to the lower level?
1. \(6.6\times10^{14}\) Hz
2. \(5.6\times10^{14}\) Hz
3. \(9.3\times10^{14}\) Hz
4. \(7.9\times10^{14}\) Hz
Subtopic: Spectral Series |
75%
From NCERT
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