Question

The light emitted by an argon laser light includes light with a wavelength of 488 nm. what is the frequency of this light? 6.15 × 105 hz 160 hz 6.15 × 1014 hz 1.6 × 1011 hz

Answer 1

Frequency and wavelength are inversely related. That is, when frequency increases, the value of the wavelength decreases and vice versa. The constant of proportionality of the relation is the speed of light that has a value of 3.0x10^8 m/s. We calculate as follows:

wavelength = speed of light /frequency
488x10^-9 = 3.8x10^8 / frequency
frequency = 6.15x10^14 /s = 6.15x10^14 Hz ------> OPTION 3