- #1

SuchBants

- 23

- 0

## Homework Statement

Used a solar cell and a ray box, altering the distance from the solar cell to the light source in 10cm increments.

Did the usual high school experimental controls and repeats.

Assuming that the voltage is proportional to the irradiance, I am meant to graph the results.

## Homework Equations

[/B]

I

_{1}d

_{1}

^{2}=I

_{2}d

_{2}

^{2}

I = k / d^2

## The Attempt at a Solution

I graphed the results:

http://imgur.com/a/Pc70V[/B]

But as you can see, the inverse square graph isn't a straight line and I don't know why. Could it be my results or am I graphing it wrong?