GKFix MCQ Question

What is the value of the speed of light (c) used in the wavenumber calculation?

• A. 6.626×10⁻³⁴ m/s
• B. 1.602×10⁻¹⁹ m/s
• C. 9.1×10⁻³¹ m/s
• D. 3×10⁸ m/s