- 1(current)
Q. No.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 |
64%
From NCERT
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Whenever a photon is emitted by a hydrogen atom in the Paschen series, it is followed by further emissions of photons, in the Balmer series or the Lyman series.
These photons can have:
These photons can have:
| 1. | \(2\) possible energy values. |
| 2. | \(3\) possible energy values. |
| 3. | \(4\) possible energy values. |
| 4. | \(5\) possible energy values. |
Subtopic: Spectral Series |
65%
From NCERT
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The wavelength of the first spectral line of the Lyman series of the hydrogen spectrum is:
1. \(1218\) Å
2. \(974.3\) Å
3. \(2124\) Å
4. \(2120\) Å
Subtopic: Spectral Series |
67%
From NCERT
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In which of the following systems will the wavelength corresponding to \(n=2\) to \(n=1\) be minimum?
| 1. | hydrogen atom |
| 2. | deuterium atom |
| 3. | singly ionized helium |
| 4. | doubly ionized lithium |
Subtopic: Spectral Series |
73%
From NCERT
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The wavelength of the Lyman series of hydrogen atom appears in:
| 1. | visible region |
| 2. | far infrared region |
| 3. | ultraviolet region |
| 4. | infrared region |
Subtopic: Spectral Series |
78%
From NCERT
NEET - 2023
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The ratio of wavelengths of the last line of Balmer series and the last line of Lyman series is:
1. \(1\)
2. \(4\)
3. \(0.5\)
4. \(2\)
Subtopic: Spectral Series |
76%
From NCERT
NEET - 2017
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The wavelength of the first line of Lyman series for the hydrogen atom is equal to that of the second line of Balmer series for a hydrogen-like ion. The atomic number \(Z\) of hydrogen-like ion is:
1. \(4\)
2. \(1\)
3. \(2\)
4. \(3\)
1. \(4\)
2. \(1\)
3. \(2\)
4. \(3\)
Subtopic: Spectral Series |
66%
From NCERT
AIPMT - 2011
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The transition from the state \(n=3\) to \(n=1\) in hydrogen-like atoms results in ultraviolet radiation. Infrared radiation will be obtained in the transition from:
1. \(3\rightarrow 2\)
2. \(4\rightarrow 2\)
3. \(4\rightarrow 3\)
4. \(2\rightarrow 1\)
Subtopic: Spectral Series |
79%
From NCERT
AIPMT - 2012
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Which of the following transitions will the wavelength be minimum?
| 1. | \(n=5\) to \(n=4\) |
| 2. | \(n=4\) to \(n=3\) |
| 3. | \(n=3\) to \(n=2\) |
| 4. | \(n=2\) to \(n=1\) |
Subtopic: Spectral Series |
81%
From NCERT
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- 1(current)
Q. No.
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