Photoelectric Effect 0.0 / 5 ? PhysicsParticle physicsQuantum physicsphotoelectricASAQA Created by: akelly_3102Created on: 03-05-18 21:48 How does light intensity affect electrons in the photoelectric effect? Nothing - electrons can only absorb one photon at a time so no increase in emission 1 of 6 How does frequency affect electrons in the photoelectric effect? Frequency > threshold frequency = emission of electrons. Higher frequency = higher rate of emission, lower frequency = lower rate of emission. 2 of 6 What is the work function? The energy required to break the bonds that hold the electron to the metal. 3 of 6 What is stopping potential? The potential difference needed to stop the fastest moving electron with max Ek. 4 of 6 What is the equation of stopping potential? eVs = Ek(max) where; eVs = charge on electron x stopping potential in V 5 of 6 How does the work function affect the emission of electrons? Energy gained from photon > work function = electrons emitted. Energy gained from photon < work function = no electrons emitted. 6 of 6
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