Question

If the color red has a wavelength of 7.0 107 m. its frequency is
4.3-1014
5.0.1014
5.2.1094
7.5-1014

Answer 1

i think it’s 5.0.1014

Answer 2

Answer:

4.3⋅1014 is the answer

Explanation:

λf = c = 2.998e8 m/s (speed of light in vacuum)

f = 2.998e8 / 7e-7 = 4.28e14 Hz (a)