The photons from the Balmer series in Hydrogen spectrum having wavelength between `450 nm` to `700 nm` are incident on a metal surface of work function `2 eV` Find the maximum kinetic energy of ejected electron (Given hc = 1242 eV nm)`

Explanation

To find the maximum kinetic energy of the ejected electron when photons from the Balmer series in the hydrogen spectrum are incident on a metal surface, we will follow these steps:

### Step 1: Calculate the energy of the photons
The energy of a photon can be calculated using the formula:
\[ E = \frac{hc}{\lambda} \]
where:
- \( h \) is Planck's constant,
- \( c \) is the speed of light,
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