• question_answer In a photoelectric effect experiment, the maximum kinetic energy of the ejected photoelectrons is measured for various wavelengths of the incident light. Figure shows a graph of this maximum kinetic energy ${{K}_{max}}$ as a function of the wavelength $\lambda$ of the light falling on the surface of the metal. Which of the following statement is/are correct? [a] Threshold frequency for the metal is $1.2\,\,\times \,\,{{10}^{15}}Hz$ [b] Work function of the metal is $4.968\text{ }eV$ [c] Maximum kinetic energy of photoelectrons corresponding to light of wavelength 100 nm is nearly $7.4\text{ }eV$ [d] Photoelectric effect takes place with red light A) a, b                              B) a, b, cC) a, b, c, d                      D) a, c, d

$\frac{hc}{{{\lambda }_{0}}}$ $\frac{hc}{\lambda }\,\,=\,\,\frac{hc}{{{\lambda }_{0}}}\,\,+\,\,K.{{E}_{\max }}$