The denser medium has particles more closely packed thus making the propagation of sound fasterį is the frequency of the sound wave. As the density of the medium increases, the intensity of the sound wave travelling through it will also increase. Sound Intensity is computed as the power carried by the sound waves per unit area in the direction perpendicular to that area. Scientifically speaking, your ears were able to catch the amount of energy through the vibration of the source per unit distance from the source, the physical quantity used to denote this is ‘Sound Intensity’ or ‘Acoustic Intensity’. Defining the Intensity of light, it is the power delivered by light per unit area of light. Luminous Intensity or Light Intensity is the amount of visible light emitted from the source/ brightness of light from the source per unit distance.
The core idea behind the definition and unit of measurement (Watt per meter square) remains the same for both the intensity of light and sound. The magnitude of intensity will depend on the strength and amplitude of a wave under propagation. Defining the Intensity of a wave, it is the quantity of energy that the wave conveys per unit time across the surface of the unit area, and it is also equivalent to the energy density multiplied by the wave speed.
Light does not require a medium to travel while sound requires a medium.
Light has transverse waves while sound has longitudinal waves. Light and sound, both are different types of waves.
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