How does the maximum kinetic energy of emitted electrons very with the increase in work function of metals ?

Explanation

To understand how the maximum kinetic energy of emitted electrons varies with an increase in the work function of metals, we can analyze the situation using Einstein's photoelectric equation. Here’s a step-by-step solution:

### Step 1: Understand the Photoelectric Effect
The photoelectric effect occurs when light (photons) hits a metal surface and causes the emission of electrons. The energy of the incident photon is absorbed by the electron, which can then be emitted from the metal surface.

### Step 2: Einstein's Photoelectric Equation
Einstein's equation for the photoelectric effect is given by:
\[ E = W + KE_{max} \]
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