A filter transition only the radiationof wavelength greater than 440 nm. Radiation from a hydrogen discharge tube goes through such a filter and is incident on a metel of work function 2.0eV . Find the stopping potential which can stop the photoelectrons.

Explanation

To solve the problem, we need to find the stopping potential that can stop the photoelectrons emitted from a metal when exposed to radiation of wavelength greater than 440 nm. The work function of the metal is given as 2.0 eV.

### Step-by-Step Solution:

1. **Identify the relevant equations**:
According to the photoelectric effect, the energy of the incident photons can be related to the work function and the stopping potential using the equation:
\[
E = \phi + eV_0
...