The term describing energy loss of a propagating wave is?

The term describing energy loss of a propagating wave is?

• A. Attenuation
• B. Reflection
• C. Absorption
• D. Scattering

Answer: (A)

Attenuation describes the decrease in a wave's energy (and amplitude) as it travels through a medium. This overall loss comes from several processes that sap energy from the forward-propagating wave, with absorption converting energy into heat and scattering redirecting energy in many directions. Reflection, by contrast, is energy bounced back toward the source at a boundary, so it doesn’t represent the ongoing forward energy loss along the path. Absorption and scattering are mechanisms that contribute to attenuation, but the single term that captures the total energy loss during propagation is attenuation.

Attenuation describes the decrease in a wave's energy (and amplitude) as it travels through a medium. This overall loss comes from several processes that sap energy from the forward-propagating wave, with absorption converting energy into heat and scattering redirecting energy in many directions. Reflection, by contrast, is energy bounced back toward the source at a boundary, so it doesn’t represent the ongoing forward energy loss along the path. Absorption and scattering are mechanisms that contribute to attenuation, but the single term that captures the total energy loss during propagation is attenuation.