The kinetic energy of a photoelectron is 3.0 × 10⁻¹⁹ J when irradiated with light of frequency 8.0 × 10¹⁴ Hz. What is th
E = hν ≈ 5.301×10⁻¹⁹ J. W₀ = E - KE ≈ 2.301×10⁻¹⁹ J. ν₀ = W₀/h ≈ 3.47×10¹⁴ Hz.
Ref: NCERT Class 11 Chemistry > Chapter 2: Structure of Atom > Topic: Developments Leading to Bohr Model - Electromagnetic Radiation and Spectrum