A metal whose work function is 2 eV is illuminated by light of wavelength `3 * 10^-7m`. Calculate the stopping potential

A metal whose work function is 2 eV is illuminated by light of wavelength 3 * 10^-7m . Calculate threshold frequency

A metal whose work function is 2 eV is illuminated by light of wavelength 3 * 10^-7m . Calculate maximum energy of photoelectrons