A metal has a work function of 2.0 eV and is illuminated by monochromatic light of wavelength 500nm. Calculate (a) the threshold wavelength (b) the maximum energy of photoelectrons (c) the stopping potential. [use h=`6.63xx10^(-34) J, c=3xx10^8ms^-1`]

Explanation

To solve the problem step by step, we will calculate the threshold wavelength, the maximum energy of photoelectrons, and the stopping potential for the given metal with a work function of 2.0 eV illuminated by monochromatic light of wavelength 500 nm.

### Given Data:
- Work function (Φ₀) = 2.0 eV
- Wavelength (λ) = 500 nm = 500 x 10^(-9) m
- Planck's constant (h) = 6.63 x 10^(-34) J·s
- Speed of light (c) = 3 x 10^8 m/s
- 1 eV = 1.6 x 10^(-19) J
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