GKFix MCQ Question

What is the value of Planck's constant (h) used in the calculations?

• A. 6.6 × 10⁻³⁴ J s
• B. 6.6 × 10⁻³⁴ eV s
• C. 3.0 × 10⁸ m/s
• D. 1.6 × 10⁻¹⁹ C