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Q. No.Match List-I with List-II:
Choose the correct answer from the options given below:
1. \(\mathrm{A\text-IV, B\text-III, C\text-I, D\text-II}\)
2. \(\mathrm{A\text-I, B\text-IV, C\text-III, D\text-II}\)
3. \(\mathrm{A\text-IV, B\text-I, C\text-II, D\text-III}\)
4. \(\mathrm{A\text-IV, B\text-III, C\text-II, D\text-I}\)
| List-I | List-II | ||
| \(\mathrm{(A)}\) | \(E = h\nu\) | \(\mathrm{(I)}\) | de-Broglie wavelength |
| \(\mathrm{(B)}\) | Diffraction and Interference | \(\mathrm{(II)}\) | Particle nature of light |
| \(\mathrm{(C)}\) | \(\lambda = h/p\) | \(\mathrm{(III)}\) | Wave nature of light |
| \(\mathrm{(D)}\) | Compton effect | \(\mathrm{(IV)}\) | Energy of photon |
1. \(\mathrm{A\text-IV, B\text-III, C\text-I, D\text-II}\)
2. \(\mathrm{A\text-I, B\text-IV, C\text-III, D\text-II}\)
3. \(\mathrm{A\text-IV, B\text-I, C\text-II, D\text-III}\)
4. \(\mathrm{A\text-IV, B\text-III, C\text-II, D\text-I}\)
Subtopic: Particle Nature of Light |
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NEET - 2026
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For a metal of work function \(6.6\) eV, which of the following wavelengths of incident radiation does not give rise to the photoelectric effect?
(take Planck's constant as \(6.6\times 10^{-34}\) J-s)
1. \(200~\text{nm}\)
2. \(150~\text{nm}\)
3. \(100~\text{nm}\)
4. \(50~\text{nm}\)
(take Planck's constant as \(6.6\times 10^{-34}\) J-s)
1. \(200~\text{nm}\)
2. \(150~\text{nm}\)
3. \(100~\text{nm}\)
4. \(50~\text{nm}\)
Subtopic: Photoelectric Effect: Experiment |
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Level 2: 60%+
NEET - 2026
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De-Broglie wavelength of an electron orbiting in the \(n=2\) state of a hydrogen atom is close to: (given: Bohr radius \(=0.052~ \text{nm}\))
| 1. | \(1.67~ \text{nm}\) | 2. | \(2.67~ \text{nm}\) |
| 3. | \(0.067~ \text{nm}\) | 4. | \(0.67~ \text{nm}\) |
Subtopic: De-broglie Wavelength |
Level 3: 35%-60%
NEET - 2025
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Which of the following options represents the variation of photoelectric current with the property of light shown on the \(x \text{-}\)axis?
| (A) |  |
(B) |  |
| (C) |  |
(D) |  |
| 1. | (A) and (D) | 2. | (B) and (D) |
| 3. | (A) only | 4. | (A) and (C) |
Subtopic: Photoelectric Effect: Experiment |
Level 3: 35%-60%
NEET - 2025
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A photon and an electron (of mass \(m\)) have the same total energy \(E. \) If \(c\) denotes the speed of light, what is the ratio of their de-Broglie wavelengths \((\lambda_{\text{photon}}/\lambda_{\text{electron}})\text{?} \)
| 1. | \(c\sqrt{\dfrac{2m}{E}} \) | 2. | \(\dfrac{1}{c}\sqrt{\dfrac{E}{2m}}\) |
| 3. | \(\sqrt{\dfrac{E}{2m}}\) | 4. | \(c\sqrt{2mE}\) |
Subtopic: De-broglie Wavelength |
Level 3: 35%-60%
NEET - 2025
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If \(c\) is the velocity of light in free space, the correct statements about photons among the following are:
| (A) | The energy of a photon is \(E=h\nu.\) |
| (B) | The velocity of a photon is \(c.\) |
| (C) | The momentum of a photon, \(p={\dfrac{h\nu}{c}}.\) |
| (D) | In a photon-electron collision, both total energy and total momentum are conserved. |
| (E) | Photon possesses a positive electric charge. |
| 1. | (A), (B), (C) and (D) only |
| 2. | (A), (C) and (D) only |
| 3. | (A), (B), (D) and (E) only |
| 4. | (A) and (B) only |
Subtopic: Particle Nature of Light |
62%
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NEET - 2024
Hints
The graph that shows the variation of \({\dfrac{1}{\lambda^2}}\) with the kinetic energy \(E\) (where \(\lambda\) is the de-Broglie wavelength of a free particle) is:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: De-broglie Wavelength |
55%
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NEET - 2024
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Radiation of wavelength \(280~\text{nm}\) is used in an experiment of photoelectric effect with cathode of work function, \(2.5~\text{eV}.\) The maximum kinetic energy of the photoelectrons is:
(take \(h=6.62\times10^{-34}~\text{J s}\) and \(c=3\times10^{8}~\text{ms}^{-1}\))
(take \(h=6.62\times10^{-34}~\text{J s}\) and \(c=3\times10^{8}~\text{ms}^{-1}\))
| 1. | \(4.4~\text{eV}\) | 2. | \(7.103\times10^{-15}~\text{J}\) |
| 3. | \(1.9~\text{eV}\) | 4. | \(4.60~\text{eV}\) |
Subtopic: Einstein's Photoelectric Equation |
74%
Level 2: 60%+
NEET - 2024
Hints
Given below are two statements:
In the light of the above statements, choose the most appropriate answer from the options given below:
| Statement I: | The de Broglie wavelength associated with a material particle depends on its charge and nature. |
| Statement II: | The wave nature of particles in sub-atomic domain is significant and measurable. |
| 1. | Both Statement I and Statement II are correct. |
| 2. | Both Statement I and Statement II are incorrect. |
| 3. | Statement I is correct but Statement II is incorrect. |
| 4. | Statement I is incorrect but Statement II is correct. |
Subtopic: De-broglie Wavelength |
Level 3: 35%-60%
NEET - 2024
Hints
An electron and an alpha particle are accelerated by the same potential difference. Let \(\lambda_\mathrm{e}\) and \(\lambda_\mathrm{\alpha}\) denote the de-Broglie wavelengths of the electron and the alpha particle, respectively, then:
| 1. | \(\lambda_{\mathrm{e}}>\lambda_{\alpha}\) | 2. | \(\lambda_{\mathrm{e}}=4\lambda_{\alpha}\) |
| 3. | \(\lambda_{\mathrm{e}}=\lambda_{\alpha}\) | 4. | \(\lambda_{\mathrm{e}}<\lambda_{\alpha}\) |
Subtopic: De-broglie Wavelength |
71%
Level 2: 60%+
NEET - 2024
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