Determine the frequency range of light that is visible to an average human being ( 400 nm < < 700 nm ).

Step-by-step solution

The relation between frequency , wavelength , and speed of light c is given by = c . Given the wavelength range 400 nm For the lower limit of wavelength, = 400 nm = 400 10⁻⁹ m : _ max = 3 10⁸ 400 10⁻⁹ = 7.5 10¹⁴ Hz For the upper limit of wavelength, = 700 nm = 700 10⁻⁹ m : _ min = 3 10⁸ 700 10⁻⁹ 4.3 10¹⁴ Hz Thus, the frequency range of visible light is 4.3 10¹⁴ Hz - 7.5 10¹⁴ Hz .