Photoelectric Effect and Quantum Model of Light // HSC Physics

⌚Timestamp
00:00 What is the photoelectric effect?
00:42 Predictions made by the wave model of light
02:18 Lenard's experiment on the photoelectric effect
10:05 Quantum model of light
14:31 Why kinetic energy increases with frequency of light
16:15 Why current increases with intensity of light
17:26 Kinetic energy vs frequency graph
20:09 Kinetic energy vs intensity graph
21:32 Current vs frequency graph
21:56 Calculation example

📚Syllabus
• investigate the evidence from photoelectric effect investigations that demonstrated inconsistency with the wave model for light (ACSPH087, ACSPH123, ACSPH137)
• analyse the photoelectric effect 𝐾max = ℎ𝑓−𝜙 as it occurs in metallic elements by applying the law of conservation of energy and the photon model of light, (ACSPH119)

[Meks]

Is that all you took from this … my light cone says event E is only relative too the observer

[AngusMcAlister]

21:51. I thought increasing the wavelength of light would result in a decreased frequency which results in a decrease in energy of the photon? Because of this, after the photoelectron is emitted it will have less kinetic energy hence the current will decrease.