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Grand Master PhysicsStage 5 Grand MasterUnit 17 Dual Nature of Matter and RadiationLesson 145 The photoelectric effect

4/7Hallwachs' and Lenard's observations (photocurrent, threshold frequency)

COMING SOON · TOPIC 4 OF 7Hallwachs' and Lenard's observations (photocurrent, threshold frequency)NCERTNEETJEE MainJEE AdvThis topic video is in production. Lesson 145 of 171: The photoelectric effect.The full course opens in January 2027.
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Lesson 145: its 7 topics

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  1. 1Photoelectric effect (photoelectric emission, photoelectrons, photosensitive materials)Topic 1 of 7NCERTNEETJEE MainJEE AdvComing soon
  2. 2Electron emission and work function (thermionic, field, photoelectric emission; electron volt)Topic 2 of 7NCERTNEETJEE MainJEE AdvComing soon
  3. 3Hertz's observations (UV enhances spark discharge)Topic 3 of 7NCERTNEETJEE MainJEE AdvComing soon
  4. 4Hallwachs' and Lenard's observations (photocurrent, threshold frequency)Topic 4 of 7NCERTNEETJEE MainJEE AdvComing soon
  5. 5Effect of intensity of light on photocurrentTopic 5 of 7NCERTNEETJEE MainJEE AdvComing soon
  6. 6Effect of potential on photocurrent: saturation current, stopping (cut-off) potential, K_max = e V0Topic 6 of 7NCERTNEETJEE MainJEE AdvComing soon
  7. 7Effect of frequency of incident radiation on stopping potential; threshold frequencyTopic 7 of 7NCERTNEETJEE MainJEE AdvComing soon

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