試題詳解

49. Given that the wavelengths of visible light range from 400 nm to 700 nm, what is the highest frequency of visible light? (c = 3.0 x 10⁸ m/s)
(A) 3.1 x 10⁸ Hz
(B) 7.5 x 10¹⁴ Hz
(C) 2.3 x 10²⁰ Hz
(D) 4.3 x 10¹⁴ Hz
(E) 5.0 x 10⁸ Hz.