The photo electric current at distances `r_1 and r_2` of light source from photoelectric cell are `I_1 and I_2` respectively. Find the value of `I_1//I_2`.

Explanation

To find the ratio of the photoelectric currents \( I_1 \) and \( I_2 \) at distances \( r_1 \) and \( r_2 \) from a light source, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Relationship Between Intensity and Distance**:
The intensity \( I \) of light from a point source decreases with the square of the distance from the source. This is given by the inverse square law:
\[
I \propto \frac{1}{r^2}
...