Photoelectric Current Hard
Hardphysics
Increasing light intensity (above threshold) primarily increases:
Select the correct option:
Solution
Incorrect! Answer:
Number of emitted electrons per unit time
Intensity of light corresponds to the number of photons hitting a unit area per second (N).
- Each photon (above threshold) liberates exactly one electron.
- Therefore, higher intensity leads to a higher Photoelectric Current (I, number of electrons per second).
- Crucially, intensity has no effect on the maximum kinetic energy of the electrons; that is determined solely by the photon's frequency (f).
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About This Question
- Subject
- physics
- Chapter
- dual nature of radiation and matter
- Topic
- photoelectric current hard
- Difficulty
- Hard
- Year
- 2025
Solution
Correct Answer:
Number of emitted electrons per unit time
Intensity of light corresponds to the number of photons hitting a unit area per second (N).
- Each photon (above threshold) liberates exactly one electron.
- Therefore, higher intensity leads to a higher Photoelectric Current (I, number of electrons per second).
- Crucially, intensity has no effect on the maximum kinetic energy of the electrons; that is determined solely by the photon's frequency (f).
This hard difficulty physics question is from the chapter dual nature of radiation and matter, covering the topic of photoelectric current hard. It appeared in the 2025 exam.
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