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Q. No.For a photoelectric cell, the graph showing the variation of stopping potential \((V_{0})\) with the frequency \((f)\) of incident light is best represented by:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Â Einstein's Photoelectric Equation |
 73%
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Which of the following figures represent the variation of the particle momentum and the associated de-Broglie wavelength?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Â De-broglie Wavelength |
 87%
From NCERT
NEET - 2015
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The figure shows a plot of photocurrent versus anode potential for a photosensitive surface for three different radiations. Which one of the following is a correct statement?
| 1. | Curves \(a\) and \(b\) represent incident radiations of different frequencies and different intensities. |
| 2. | Curves \(a\) and \(b\) represent incident radiation of the same frequency but of different intensities. |
| 3. | Curves \(b\) and \(c\) represent incident radiation of different frequencies and different intensities. |
| 4. | Curves \(b\) and \(c\) represent incident radiations of the same frequency having the same intensity. |
Subtopic: Â Photoelectric Effect: Experiment |
 86%
From NCERT
AIPMT - 2009
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According to Einstein's photoelectric equation, the graph between the kinetic energy of photoelectrons ejected and the frequency of incident radiation is:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Â Einstein's Photoelectric Equation |
 77%
From NCERT
AIPMT - 2004
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In the given graph of the photoelectric experiment, the maximum energy of the emitted photoelectron will be:
| 1. | \(2\) eV | 2. | \(0\) eV |
| 3. | \(4\) eV | 4. | \(4\) J |
Subtopic: Â Photoelectric Effect: Experiment |
 59%
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The correct graph between the maximum energy of a photoelectron \(\left(K_{max}\right)\) and the inverse of the wavelength \(\left(\frac{1}{\lambda}\right)\) of the incident radiation is given by the curve:
| 1. | \(A\) | 2. | \(B\) |
| 3. | \(C\) | 4. | None of these |
Subtopic: Â Einstein's Photoelectric Equation |
 80%
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The figure shows different graphs between stopping potential \(V_0\) and frequency \(v\) for photosensitive surfaces of cesium, potassium, sodium, and lithium. The plots are parallel. Which of the following about their work function is correct?
| 1. | \((i) > (ii) > (iii) > (iv)\) |
| 2. | \((i)>(iii)>(ii)> (iv)\) |
| 3. | \((iv)>(iii)>(ii)> (i)\) |
| 4. | \((i)=(iii)>(ii)= (iv)\) |
Subtopic: Â Photoelectric Effect: Experiment |
 79%
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If stopping potential \(V_{0}\) is plotted versus frequency \(\nu\) in an experiment of the photoelectric effect, the graph as shown in the diagram is obtained. Then: (e is an electronic charge)
| 1. | Planck's constant = \(\dfrac{b}{a}\) |
| 2. | Planck's constant = \(\dfrac{eb}{a}\) |
| 3. | Planck's constant = \(\dfrac{a}{b}\) |
| 4. | Planck's constant = \(\dfrac{ea}{b}\) |
Subtopic: Â Photoelectric Effect: Experiment |
 74%
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | A particle of mass M at rest decay into two particles of masses m1 and m2, having non-zero velocities will have ratio of de-Broglie wavelengths unity. |
| Reason (R): | Here we cannot apply conservation of linear momentum. |
In the light of the above statements choose the correct answer from the options given below:
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â De-broglie Wavelength |
 67%
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Given below are two statements:
| Assertion (A): | Mass of a moving photon varies inversely to the wavelength. |
| Reason (R): | Energy of the particle = Mass\(\times\)(speed of light)2. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Â Particle Nature of Light |
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