GKFix MCQ Question

What is the energy of a 200 nm photon?

• A. 9.939 × 10⁻¹⁹ J
• B. 9.839 × 10⁻¹⁹ J
• C. 9.739 × 10⁻¹⁹ J
• D. 9.639 × 10⁻¹⁹ J