Class 12 Exam > Class 12 Questions > The number of photo electrons emitted for lig...
Start Learning for Free
The number of photo electrons emitted for lightof a frequency v (higher than the threshold frequency v0) is proportional to: [2009]
- a)Threshold frequency ( v0)
- b)Intensity of light
- c)Frequency of light ( v )
- d)v – v0
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The number of photo electrons emitted for lightof a frequency v (highe...
The number of photoelectrons emitted is
proportional to the intensity of incident
light. Saturation current ∝ intensity.
proportional to the intensity of incident
light. Saturation current ∝ intensity.
Most Upvoted Answer
The number of photo electrons emitted for lightof a frequency v (highe...
The Photoelectric Effect
The photoelectric effect describes how light can eject electrons from a metal surface. The key factors influencing the number of emitted photoelectrons are the light's frequency and intensity.
Proportionality to Intensity of Light
- The number of photoelectrons emitted is directly related to the intensity of the incident light.
- Intensity refers to the power per unit area and is related to the number of photons striking the surface per second.
Why Intensity Matters
- As the intensity increases, more photons are available to interact with the electrons in the metal.
- Each photon has enough energy (frequency greater than the threshold frequency, v0) to release an electron.
- Thus, a higher intensity leads to a greater number of photons and consequently, more ejected electrons.
Frequency and Threshold Frequency
- The frequency of light (v) must be greater than the threshold frequency (v0) for photoemission to occur.
- While frequency affects the energy of individual photons, it does not directly influence the number of emitted electrons as long as it exceeds the threshold.
- Therefore, the difference between v and v0 is not a determining factor for the number of emitted electrons.
Conclusion
In summary, the correct answer is option 'B' because:
- The number of emitted photoelectrons is directly proportional to the intensity of light.
- Higher intensity results in more photons, leading to an increased number of emitted electrons, while frequency merely needs to be above the threshold for emission to occur.
The photoelectric effect describes how light can eject electrons from a metal surface. The key factors influencing the number of emitted photoelectrons are the light's frequency and intensity.
Proportionality to Intensity of Light
- The number of photoelectrons emitted is directly related to the intensity of the incident light.
- Intensity refers to the power per unit area and is related to the number of photons striking the surface per second.
Why Intensity Matters
- As the intensity increases, more photons are available to interact with the electrons in the metal.
- Each photon has enough energy (frequency greater than the threshold frequency, v0) to release an electron.
- Thus, a higher intensity leads to a greater number of photons and consequently, more ejected electrons.
Frequency and Threshold Frequency
- The frequency of light (v) must be greater than the threshold frequency (v0) for photoemission to occur.
- While frequency affects the energy of individual photons, it does not directly influence the number of emitted electrons as long as it exceeds the threshold.
- Therefore, the difference between v and v0 is not a determining factor for the number of emitted electrons.
Conclusion
In summary, the correct answer is option 'B' because:
- The number of emitted photoelectrons is directly proportional to the intensity of light.
- Higher intensity results in more photons, leading to an increased number of emitted electrons, while frequency merely needs to be above the threshold for emission to occur.
|
Explore Courses for Class 12 exam
|
|
Top Courses for Class 12View all
Question Description
The number of photo electrons emitted for lightof a frequency v (higher than the threshold frequency v0) is proportional to: [2009]a)Threshold frequency ( v0)b)Intensity of lightc)Frequency of light ( v )d)v – v0Correct answer is option 'B'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about The number of photo electrons emitted for lightof a frequency v (higher than the threshold frequency v0) is proportional to: [2009]a)Threshold frequency ( v0)b)Intensity of lightc)Frequency of light ( v )d)v – v0Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The number of photo electrons emitted for lightof a frequency v (higher than the threshold frequency v0) is proportional to: [2009]a)Threshold frequency ( v0)b)Intensity of lightc)Frequency of light ( v )d)v – v0Correct answer is option 'B'. Can you explain this answer?.
The number of photo electrons emitted for lightof a frequency v (higher than the threshold frequency v0) is proportional to: [2009]a)Threshold frequency ( v0)b)Intensity of lightc)Frequency of light ( v )d)v – v0Correct answer is option 'B'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about The number of photo electrons emitted for lightof a frequency v (higher than the threshold frequency v0) is proportional to: [2009]a)Threshold frequency ( v0)b)Intensity of lightc)Frequency of light ( v )d)v – v0Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The number of photo electrons emitted for lightof a frequency v (higher than the threshold frequency v0) is proportional to: [2009]a)Threshold frequency ( v0)b)Intensity of lightc)Frequency of light ( v )d)v – v0Correct answer is option 'B'. Can you explain this answer?.
Solutions for The number of photo electrons emitted for lightof a frequency v (higher than the threshold frequency v0) is proportional to: [2009]a)Threshold frequency ( v0)b)Intensity of lightc)Frequency of light ( v )d)v – v0Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of The number of photo electrons emitted for lightof a frequency v (higher than the threshold frequency v0) is proportional to: [2009]a)Threshold frequency ( v0)b)Intensity of lightc)Frequency of light ( v )d)v – v0Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
The number of photo electrons emitted for lightof a frequency v (higher than the threshold frequency v0) is proportional to: [2009]a)Threshold frequency ( v0)b)Intensity of lightc)Frequency of light ( v )d)v – v0Correct answer is option 'B'. Can you explain this answer?, a detailed solution for The number of photo electrons emitted for lightof a frequency v (higher than the threshold frequency v0) is proportional to: [2009]a)Threshold frequency ( v0)b)Intensity of lightc)Frequency of light ( v )d)v – v0Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of The number of photo electrons emitted for lightof a frequency v (higher than the threshold frequency v0) is proportional to: [2009]a)Threshold frequency ( v0)b)Intensity of lightc)Frequency of light ( v )d)v – v0Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The number of photo electrons emitted for lightof a frequency v (higher than the threshold frequency v0) is proportional to: [2009]a)Threshold frequency ( v0)b)Intensity of lightc)Frequency of light ( v )d)v – v0Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 12 tests.
|
|
Explore Courses for Class 12 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup