Frequency question

Question

What frequency is associated with 486.13 nm?

Answer 1

486.13 is the wavelength and you are looking for frequency. These are related by the speed of light, c as follows:

c = λν

486.13 nm x 10^-9 m/nm = 4.8613x10^-7 m

c = 3x10⁸ m/sec

 

3x10⁸ m/sec = 4.8613x10^-7m v

v= 3x10⁸ m/sec/4.8613x10^-7m

v = 6.17x10¹⁴ sec^-1 (6.17x10¹⁴ Hz)