The threshold wavelength of a metal is `230 nm` calculate the `KE` of the electrons from that metal surface by using UV radiation of wavelength `180 nm`

Explanation

To solve the problem of calculating the kinetic energy (KE) of electrons emitted from a metal surface when exposed to UV radiation, we will follow these steps:

### Step 1: Understand the relationship between energy, threshold wavelength, and kinetic energy
The energy of the incoming photon can be calculated using the formula:
\[ E = \frac{hc}{\lambda} \]
where:
- \( E \) is the energy of the photon,
- \( h \) is Planck's constant (\( 6.626 \times 10^{-34} \, \text{J s} \)),
...