# Photoelectric Effect

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
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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.
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What is the work function?
The energy required to break the bonds that hold the electron to the metal.
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What is stopping potential?
The potential difference needed to stop the fastest moving electron with max Ek.
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What is the equation of stopping potential?
eVs = Ek(max) where; eVs = charge on electron x stopping potential in V
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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.
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## Other cards in this set

### Card 2

#### Front

How does frequency affect electrons in the photoelectric effect?

#### Back

Frequency > threshold frequency = emission of electrons. Higher frequency = higher rate of emission, lower frequency = lower rate of emission.

### Card 3

#### Front

What is the work function?

### Card 4

#### Front

What is stopping potential?

### Card 5

#### Front

What is the equation of stopping potential?