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Both the frequency and the intensity of a beam of light falling on the surface of photoelectric material are increased by a factor of two. This will :
- a)increase both, the maximum kinetic energy of the photo-electrons, as well as photoelectric saturation current by a factor of two.
- b)increase the maximum kinetic energy of the photo-electrons by a factor greater than two and would increase the photoelectric saturation current by a factor of two.
- c)increase the maximum kinetic energy of the photoelectrons by a factor greater than two and will have no effect on the magnitude of the photoelectric saturation current produced.
- d)increase the maximum kinetic energy of the emitted photo-electrons by a factor of two but will have no effect on the saturation photoelectric current.
Correct answer is option 'C'. Can you explain this answer?
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Understanding the Photoelectric Effect
The photoelectric effect describes the emission of electrons from a material when it absorbs light. The energy of the incoming photons determines the kinetic energy of the emitted photoelectrons.
Impact of Frequency and Intensity
- Frequency Increase: When the frequency of light is doubled, the energy of each photon increases (E = hf, where h is Planck's constant and f is frequency). Thus, the maximum kinetic energy of emitted electrons (KE_max) increases.
- Intensity Increase: Doubling the intensity of light means more photons are hitting the surface per unit time. This leads to an increase in the number of photoelectrons emitted, thereby increasing the photoelectric current.
Effects on Maximum Kinetic Energy and Saturation Current
- Maximum Kinetic Energy:
- The maximum kinetic energy of the emitted electrons is directly related to the frequency of the incident light.
- If the frequency is doubled, the energy per photon is also doubled, leading to an increase in KE_max by a factor greater than two compared to its initial value.
- Saturation Current:
- The saturation current is influenced by the number of photoelectrons emitted. Since the intensity is also doubled, there will be twice as many photons, resulting in an increase of saturation current by a factor of two.
Conclusion
Thus, the correct explanation indicates that:
- The maximum kinetic energy of the photoelectrons increases by a factor greater than two due to the frequency increase.
- The saturation current increases by a factor of two due to the intensity increase.
Therefore, option 'C' correctly states that the maximum kinetic energy increases significantly while the saturation current is proportionally affected by the intensity increase.
The photoelectric effect describes the emission of electrons from a material when it absorbs light. The energy of the incoming photons determines the kinetic energy of the emitted photoelectrons.
Impact of Frequency and Intensity
- Frequency Increase: When the frequency of light is doubled, the energy of each photon increases (E = hf, where h is Planck's constant and f is frequency). Thus, the maximum kinetic energy of emitted electrons (KE_max) increases.
- Intensity Increase: Doubling the intensity of light means more photons are hitting the surface per unit time. This leads to an increase in the number of photoelectrons emitted, thereby increasing the photoelectric current.
Effects on Maximum Kinetic Energy and Saturation Current
- Maximum Kinetic Energy:
- The maximum kinetic energy of the emitted electrons is directly related to the frequency of the incident light.
- If the frequency is doubled, the energy per photon is also doubled, leading to an increase in KE_max by a factor greater than two compared to its initial value.
- Saturation Current:
- The saturation current is influenced by the number of photoelectrons emitted. Since the intensity is also doubled, there will be twice as many photons, resulting in an increase of saturation current by a factor of two.
Conclusion
Thus, the correct explanation indicates that:
- The maximum kinetic energy of the photoelectrons increases by a factor greater than two due to the frequency increase.
- The saturation current increases by a factor of two due to the intensity increase.
Therefore, option 'C' correctly states that the maximum kinetic energy increases significantly while the saturation current is proportionally affected by the intensity increase.
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Both the frequency and the intensity of a beam of light falling on the surface of photoelectric material are increased by a factor of two. This will : a)increase both, the maximum kinetic energy of the photo-electrons, as well as photoelectric saturation current by a factor of two.b)increase the maximum kinetic energy of the photo-electrons by a factor greater than two and would increase the photoelectric saturation current by a factor of two.c)increase the maximum kinetic energy of the photoelectrons by a factor greater than two and will have no effect on the magnitude of the photoelectric saturation current produced.d)increase the maximum kinetic energy of the emitted photo-electrons by a factor of two but will have no effect on the saturation photoelectric current. Correct answer is option 'C'. Can you explain this answer?
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Both the frequency and the intensity of a beam of light falling on the surface of photoelectric material are increased by a factor of two. This will : a)increase both, the maximum kinetic energy of the photo-electrons, as well as photoelectric saturation current by a factor of two.b)increase the maximum kinetic energy of the photo-electrons by a factor greater than two and would increase the photoelectric saturation current by a factor of two.c)increase the maximum kinetic energy of the photoelectrons by a factor greater than two and will have no effect on the magnitude of the photoelectric saturation current produced.d)increase the maximum kinetic energy of the emitted photo-electrons by a factor of two but will have no effect on the saturation photoelectric current. Correct answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Both the frequency and the intensity of a beam of light falling on the surface of photoelectric material are increased by a factor of two. This will : a)increase both, the maximum kinetic energy of the photo-electrons, as well as photoelectric saturation current by a factor of two.b)increase the maximum kinetic energy of the photo-electrons by a factor greater than two and would increase the photoelectric saturation current by a factor of two.c)increase the maximum kinetic energy of the photoelectrons by a factor greater than two and will have no effect on the magnitude of the photoelectric saturation current produced.d)increase the maximum kinetic energy of the emitted photo-electrons by a factor of two but will have no effect on the saturation photoelectric current. Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Both the frequency and the intensity of a beam of light falling on the surface of photoelectric material are increased by a factor of two. This will : a)increase both, the maximum kinetic energy of the photo-electrons, as well as photoelectric saturation current by a factor of two.b)increase the maximum kinetic energy of the photo-electrons by a factor greater than two and would increase the photoelectric saturation current by a factor of two.c)increase the maximum kinetic energy of the photoelectrons by a factor greater than two and will have no effect on the magnitude of the photoelectric saturation current produced.d)increase the maximum kinetic energy of the emitted photo-electrons by a factor of two but will have no effect on the saturation photoelectric current. Correct answer is option 'C'. Can you explain this answer?.
Both the frequency and the intensity of a beam of light falling on the surface of photoelectric material are increased by a factor of two. This will : a)increase both, the maximum kinetic energy of the photo-electrons, as well as photoelectric saturation current by a factor of two.b)increase the maximum kinetic energy of the photo-electrons by a factor greater than two and would increase the photoelectric saturation current by a factor of two.c)increase the maximum kinetic energy of the photoelectrons by a factor greater than two and will have no effect on the magnitude of the photoelectric saturation current produced.d)increase the maximum kinetic energy of the emitted photo-electrons by a factor of two but will have no effect on the saturation photoelectric current. Correct answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Both the frequency and the intensity of a beam of light falling on the surface of photoelectric material are increased by a factor of two. This will : a)increase both, the maximum kinetic energy of the photo-electrons, as well as photoelectric saturation current by a factor of two.b)increase the maximum kinetic energy of the photo-electrons by a factor greater than two and would increase the photoelectric saturation current by a factor of two.c)increase the maximum kinetic energy of the photoelectrons by a factor greater than two and will have no effect on the magnitude of the photoelectric saturation current produced.d)increase the maximum kinetic energy of the emitted photo-electrons by a factor of two but will have no effect on the saturation photoelectric current. Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Both the frequency and the intensity of a beam of light falling on the surface of photoelectric material are increased by a factor of two. This will : a)increase both, the maximum kinetic energy of the photo-electrons, as well as photoelectric saturation current by a factor of two.b)increase the maximum kinetic energy of the photo-electrons by a factor greater than two and would increase the photoelectric saturation current by a factor of two.c)increase the maximum kinetic energy of the photoelectrons by a factor greater than two and will have no effect on the magnitude of the photoelectric saturation current produced.d)increase the maximum kinetic energy of the emitted photo-electrons by a factor of two but will have no effect on the saturation photoelectric current. Correct answer is option 'C'. Can you explain this answer?.
Solutions for Both the frequency and the intensity of a beam of light falling on the surface of photoelectric material are increased by a factor of two. This will : a)increase both, the maximum kinetic energy of the photo-electrons, as well as photoelectric saturation current by a factor of two.b)increase the maximum kinetic energy of the photo-electrons by a factor greater than two and would increase the photoelectric saturation current by a factor of two.c)increase the maximum kinetic energy of the photoelectrons by a factor greater than two and will have no effect on the magnitude of the photoelectric saturation current produced.d)increase the maximum kinetic energy of the emitted photo-electrons by a factor of two but will have no effect on the saturation photoelectric current. Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
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ample number of questions to practice Both the frequency and the intensity of a beam of light falling on the surface of photoelectric material are increased by a factor of two. This will : a)increase both, the maximum kinetic energy of the photo-electrons, as well as photoelectric saturation current by a factor of two.b)increase the maximum kinetic energy of the photo-electrons by a factor greater than two and would increase the photoelectric saturation current by a factor of two.c)increase the maximum kinetic energy of the photoelectrons by a factor greater than two and will have no effect on the magnitude of the photoelectric saturation current produced.d)increase the maximum kinetic energy of the emitted photo-electrons by a factor of two but will have no effect on the saturation photoelectric current. Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice JEE tests.
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