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## Homework Statement

A metal surface had dimensions of 1.5mm x 2mm. The intensity of light incident on surface is 4.5×10^-6 W/m^2. On average one electron is emitted for every 300 photons incident on the surface. Determine the initial current leaving the metal.

●wavelength of light incident is 420nm

●work function is 3.4×10^-19

## Homework Equations

I=P/A

P=W/t

I=Q/t

## The Attempt at a Solution

I know the intensity is related to the number of electrons that are emitted but not how, that's the only way I can think of aproaching this problem. Is there another way?