You're asking for the frequency of light, but you need to provide the wavelength's units. The relationship between frequency (ν) and wavelength (λ) is given by:

ν = c / λ

where:

* ν is the frequency in Hertz (Hz)

* c is the speed of light (approximately 3 x 10⁸ m/s)

* λ is the wavelength in meters (m)

To solve for the frequency, you need to provide the wavelength in meters. For example, if the wavelength is 1.87 x 10⁻¹⁴ meters:

1. Plug the values into the equation:

ν = (3 x 10⁸ m/s) / (1.87 x 10⁻¹⁴ m)

2. Calculate the frequency:

ν ≈ 1.6 x 10²² Hz

Therefore, the frequency of light with a wavelength of 1.87 x 10⁻¹⁴ meters is approximately 1.6 x 10²² Hz.