GKFix MCQ Question

What is the frequency of a wave with a wavelength of 750 nm?

• A. 3.0 × 10¹⁴ Hz
• B. 3.5 × 10¹⁴ Hz
• C. 4.0 × 10¹⁴ Hz
• D. 4.5 × 10¹⁴ Hz