Light of wavelength, , falls on a metal having work function . Photoelectric effect will take place — Atomic Structure Chemistry Question

💡 Solution & Explanation

For the photoelectric effect to occur, the energy of the incident photon must be greater than or equal to the work function of the metal. Thus, $\frac{hc}{\lambda} \ge \frac{hc}{\lambda_0}$, which simplifies to $\lambda \le \lambda_0$. Therefore, correct answer is C.