Will photoelectrons be emitted from a copper surface, of work function `4.4 eV`, when illuminated by a visible light?

Explanation

To determine whether photoelectrons will be emitted from a copper surface with a work function of 4.4 eV when illuminated by visible light, we can follow these steps:

### Step 1: Understand the Work Function
The work function (φ) is the minimum energy required to remove an electron from the surface of a material. For copper, the work function is given as 4.4 eV.

### Step 2: Determine the Energy of Visible Light
The energy of a photon can be calculated using the formula:
\[ E = \frac{hc}{\lambda} \]
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