Light of wavelength 250 nm falls on a photosensitive material with work function 3 eV. Find the stopping potential for this material.

Explanation

To solve the problem of finding the stopping potential for a photosensitive material when light of wavelength 250 nm falls on it, we can follow these steps:

### Step-by-step Solution:

1. **Identify Given Values**:
- Wavelength of light, \( \lambda = 250 \, \text{nm} = 250 \times 10^{-9} \, \text{m} \)
- Work function of the material, \( \phi = 3 \, \text{eV} \)

...