The inverse relationship between frequency (f) and wavelength (λ) in electromagnetic (EM) radiation is described by the equation:
c = f * λ
where c represents the speed of light. According to this equation, the product of frequency and wavelength for any given electromagnetic wave is equal to the speed of light.
Since the speed of light is constant in a vacuum (approximately 3.00 x 10^8 meters per second), a higher frequency corresponds to a shorter wavelength, and vice versa. In other words, as the frequency of an electromagnetic wave increases, its wavelength decreases, and as the frequency decreases, the wavelength increases. This inverse relationship between frequency and wavelength holds true for all forms of electromagnetic radiation, including visible light, radio waves, microwaves, infrared, ultraviolet, X-rays, and gamma rays.