GKFix MCQ Question

What is the frequency range of the visible spectrum?

• A. 3.0 × 10¹⁴ to 6.0 × 10¹⁴ Hz
• B. 4.0 × 10¹⁴ to 7.5 × 10¹⁴ Hz
• C. 5.0 × 10¹⁴ to 8.0 × 10¹⁴ Hz
• D. 2.0 × 10¹⁴ to 5.0 × 10¹⁴ Hz