Photoelectric Effect: Current & Voltage Effects

[385sk117]

Homework Statement

1. If frequency is constant and intencity of light is doubled what happen to the current?
2. If frequency is constant and intencity of light is doubled what happen to the voltage?
3. If intencity is constnat and frequency of light is doubled what happen to the current?
4. If intencity is constnat and frequency of light is doubled what happen to the voltage?

Homework Equations

E = hf

The Attempt at a Solution

I know the intencity of light is proportional to the number of photons
and frequency of light is is proportional to the energy of photons
So my answer is

1. current doubled
2. no change
3. no change
4. voltage doubled

am I right?

 

[Chewy0087]

yes, you are, though would the voltage be exactly doubled with the frequency bieng doubled? Think about the work function and try it mathematically.