The work functions for metals A, B and C are respectively 1.92 eV , 2.0 eV and 5 eV . According to Einstein's equation, the metals which will emit photoelectrons for a radiation of wavelength 4100 Å is/are

Step-by-step solution

That metal will emit photoelectrons which has work function lower than that obtained with the radiation of 4100 Å . Work function for wavelength of 4100 Å is aligned W & = h c & = 6.62 10⁻³⁴ 3 10^8 4100 10⁻¹⁰ & =4.8 10⁻¹⁹ ~J & = 48 10⁻¹⁹ 1.6 10⁻¹⁹ eV =3 eV aligned Now, we have aligned & W_A=1.92 eV & W_B=2.0 eV & W_C=5 eV aligned Since, W_A W and W_B W , hence, A and B will emit photoelectrons.