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:  Einstein's Photoelectric Equation |
 72%
From NCERT
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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:  De-broglie Wavelength |
 86%
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:  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:  Einstein's Photoelectric Equation |
 76%
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:  Photoelectric Effect: Experiment |
 59%
From NCERT
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The correct graph between the maximum energy of a photoelectron and the inverse of the wavelength of the incident radiation is given by the curve:

         

1. A 2. B
3. C 4. None of these
Subtopic:  Einstein's Photoelectric Equation |
 80%
From NCERT
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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:  Photoelectric Effect: Experiment |
 80%
From NCERT
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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 = \(\frac{b}{a}\)
2. Planck's constant = \(\frac{eb}{a}\)
3. Planck's constant = \(\frac{a}{b}\)
4. Planck's constant = \(\frac{ea}{b}\)
Subtopic:  Photoelectric Effect: Experiment |
 74%
From NCERT
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
 
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:  De-broglie Wavelength |
 68%
From NCERT
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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:  Particle Nature of Light |
From NCERT
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