Physics - Modern Physics - Quantum Physics - Photoelectric effect - Photoelectric Calculations

8 problems. P1: 'Cesium has work function ϕ = 2.1 eV. Threshold frequency: f₀ = ϕ/h = 2.1×1.6×10⁻¹⁹/6.63×10⁻³⁴ = ___ Hz' (5.07×10¹⁴ Hz). P2: 'Threshold wavelength: λ₀ = c/f₀ = ___ nm' (591 nm - yellow/orange light). P3: 'UV light of frequency 8×10¹⁴ Hz hits cesium. Photon energy = hf = ___ eV' (3.31