State one factor which determines the intensity of light in the photon picture of light.

Explanation

To determine the intensity of light in the photon picture of light, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Photon Picture of Light**:
- In the photon picture, light is considered to be made up of discrete packets of energy called photons.

2. **Definition of Intensity**:
...