GKFix MCQ Question

What is the energy of each photon in a helium-neon laser beam with wavelength 632.8 nm?

• A. 2.85 × 10⁻¹⁹ J
• B. 3.14 × 10⁻¹⁹ J
• C. 3.42 × 10⁻¹⁹ J
• D. 3.71 × 10⁻¹⁹ J