Question

A red stop light has a frequency of 4.40x10^14Hz. Determine the wavelength.

Answer 1

Wavelength and Frequency:

The relationship between wavelength and frequency of light is inversely proportional.

Mathematically,

`\lambda=(c)/(f)`

Where λ is the wavelength, f is the frequency, and c is the speed of light.

The speed of light is 3×10⁸ m/s

For the given case, the frequency is 4.40×10¹⁴ Hz

`\lambda=(c)/(f)=(3.0*10^8)/(4.40*10^(14))=6.81*10^(-7)\; m`

Therefore, the wavelength of the red stop light is 6.81×10⁻⁷ m