Assertion (A): When lights of wavelengths 550 nm and 340 nm on the metal surface, the respective maximum velocities of the photoelectrons ejected are and 2%. Then, the work function of a metal surface is 2.48 eV. Reason (R): The frequency of the light is directly proportional to the speed of the ejected electrons. Select the correct answer choice: (a) Both A and R are incorrect. R is not the correct explanation of A (b) Both A and R are correct. R is not the correct explanation of A. (c) Both A and R are correct. R is the correct explanation of A. (d) A is correct and R is incorrect. R is not the correct explanation of A.

Assertion (A): When lights of wavelengths 550 nm and 340 nm on the metal surface, the respective maximum velocities of the photoelectrons ejected are and 2%. Then, the work function of a metal surface is 2.48 eV. Reason (R): The frequency of the light is directly proportional to the speed of the ejected electrons. Select the correct answer choice: (a) Both A and R are incorrect. R is not the correct explanation of A (b) Both A and R are correct. R is not the correct explanation of A. (c) Both A and R are correct. R is the correct explanation of A. (d) A is correct and R is incorrect. R is not the correct explanation of A.