Which is the correct curve between the stopping potential (V0) and the intensity of incident light (I)?

1. 2.
3. 4.

Subtopic:  Photoelectric Effect: Experiment |
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The value of stopping potential in the following diagram is given by:
   

1. – 4 V

2. – 3 V

3. – 2 V

4. – 1 V

Subtopic:  Photoelectric Effect: Experiment |
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A point source of light is used in an experiment on photoelectric effects. Which of the following curves best represents the variation of photocurrent (i) with distance (d) of the source from the emitter?


1. a

2. b

3. c

4. d

Subtopic:  Photoelectric Effect: Experiment |
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The stopping potential \((V_{0})\) versus frequency \((\nu_{0})\) plot of a substance is shown in the figure. What will be the threshold wavelength?    
              
 

1.  5×1014  m

2.  6000 Å

3.  5000 Å

4.  can not be estimated from given data

Subtopic:  Photoelectric Effect: Experiment |
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For a photoelectric cell, the graph showing the variation of the cut of voltage (Vo ) with frequency (v) of incident light is best represented by:

1. 2.
3. 4.
Subtopic:  Photoelectric Effect: Experiment |
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The graph between the intensity of light falling on a metallic plate (I) and the generated current (i) is given by:

1. 2.
3. 4.
Subtopic:  Photoelectric Effect: Experiment |
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The stopping potential as a function of the frequency of the incident radiation is plotted for two different photoelectric surfaces A and B. The graphs demonstrate that A's work function is:

1. greater than that of B.
2. smaller than that of B.
3. equal to that of B.
4. no inference can be drawn about their work functions from the given graphs.
Subtopic:  Photoelectric Effect: Experiment |
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In an experiment on the photoelectric effect, the frequency f of the incident light is plotted against the stopping potential V0. The work function of the photoelectric surface is given by:
(e is an electronic charge) 

  

1. OB×e in eV

2. OB in volt

3. OA in eV

4. The slope of the line AB

Subtopic:  Einstein's Photoelectric Equation |
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The stopping potential V for photoelectric emission from a metal surface is plotted along the Y-axis and the frequency v of incident light along the X-axis. A straight line is obtained as shown in the figure. Planck's constant is given by:
 

1. the slope of the line.
2. the product of slope on the line and charge on the electron.
3. the product of intercept along the Y-axis and mass of the electron.
4. the product of the slope and mass of the electron.
Subtopic:  Einstein's Photoelectric Equation |
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If in a photoelectric experiment, the wavelength of incident radiation is reduced from 6000 Å to 4000 Å, then:
1. The stopping potential will decrease.
2. The stopping potential will increase.
3. The kinetic energy of emitted electrons will decrease.
4. The value of the work function will decrease.

Subtopic:  Photoelectric Effect: Experiment |
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