A p-n junction is fabricated from a semiconductor with band gap of `2.8eV`. Can it detect a wavelength of `6000nm`?

Explanation

To determine whether a p-n junction fabricated from a semiconductor with a band gap of 2.8 eV can detect a wavelength of 6000 nm, we will follow these steps:

### Step 1: Understand the relationship between energy and wavelength
The energy of a photon can be calculated using the formula:
\[ E = \frac{hc}{\lambda} \]
where:
...