Find the maximum wavelength of light that can cause photoelectric effect in lithium.

Explanation

To find the maximum wavelength of light that can cause the photoelectric effect in lithium, we will 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 lithium, the work function is given as 2.5 electron volts (eV).

### Step 2: Relate Work Function to Wavelength
The energy of a photon (E) can be expressed in terms of its wavelength (λ) using the formula:
\[ E = \frac{hc}{\lambda} \]
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