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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich is the correct curve between the stopping potential (V0) and the intensity of incident light (I)?
1. | 2. | ||
3. | 4. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe value of stopping potential in the following diagram is given by:
1. – 4 V
2. – 3 V
3. – 2 V
4. – 1 V
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
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.
2. 6000 Å
3. 5000 Å
4. can not be estimated from given data
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe graph between the intensity of light falling on a metallic plate (I) and the generated current (i) is given by:
1. | 2. | ||
3. | 4. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn an experiment on the photoelectric effect, the frequency f of the incident light is plotted against the stopping potential . The work function of the photoelectric surface is given by:
(e is an electronic charge)
1. OBe in eV
2. OB in volt
3. OA in eV
4. The slope of the line AB
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf 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.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology