A metal of work function 4eV is exposed to a radiation of wavelength `140xx10^(-9)` m. Find the stopping potential developed by it.

Explanation

To find the stopping potential developed by a metal when exposed to radiation, we can use the photoelectric effect equation. The stopping potential (V₀) can be calculated using the formula:

\[ V_0 = \frac{hc}{\lambda} - \phi \]

where:
- \( h \) is Planck's constant (\( 6.626 \times 10^{-34} \, \text{Js} \))
- \( c \) is the speed of light (\( 3 \times 10^8 \, \text{m/s} \))
- \( \lambda \) is the wavelength of the radiation
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