What is the effect on the velocity of emitted photoelectrons if the wavelength of the incident light is increased ?

Explanation

To determine the effect on the velocity of emitted photoelectrons when the wavelength of the incident light is increased, we can analyze the relationship between the kinetic energy of the photoelectrons and the wavelength of the incident light.

### Step-by-Step Solution:

1. **Understanding Photoelectric Effect**:
The photoelectric effect occurs when light of sufficient energy strikes a material (usually a metal), causing the emission of electrons. The energy of the incident photons is given by the equation:
\[
E = \frac{hc}{\lambda}
...