Question

Violet light has a frequency of 7.26 × 1014 Hz and travels at a speed of 3.00 × 108 m/s.

The wavelength of violet light, rounded to the nearest nanometer, is
nm.

Answer 1

λ = c/f = (3.00×10^8 m/s)/(7.26×10^14 s^−1) = 4.132×10^−7 m = 413 nm.

Answer: 413 nm.