Which among the ultraviolet rays or infrared rays will easily remove the electrons from a metallic photosensitive surface ?

Explanation

To determine which type of rays, ultraviolet (UV) or infrared (IR), can more easily remove electrons from a metallic photosensitive surface, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Work Function**:
- The work function (φ) is the minimum energy required to remove an electron from the surface of a metal. Each metal has a specific work function value.

2. **Energy of Photons**:
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