Electrons are emitted with zero velocity from a metal surface when it is exposed to radiation of wavelength 6800 Å. Calculate threshold frequency (ν 0 ) and work function (W 0 ) of the metal

Options

1. Av 0 = 2.91 × 10 14 s –1 and W 0 =4.41 × 10 –19 J
2. Bv 0 = 3.54 × 10 14 s –1 and W 0 =1.21 × 10 –19 J
3. Cv 0 = 4.41 × 10 14 s –1 and W 0 =2.91 × 10 –19 J
4. Dv 0 = 2.35 × 10 14 s –1 and W 0 =5.54 × 10 –19 J