Wave property that give a relative indication of the amount of energy the wave transmits

• A. Amplitude
• B. Frequency
• C. Wavelength
• D. Speed

Answer: (A)

The amount of energy a wave transmits is tied to how big its oscillations are—the wave’s amplitude. When the oscillations are larger, more energy is carried by each cycle, so the energy flux increases. In many wave models, energy is proportional to the square of the amplitude, so doubling the amplitude can quadruple the energy transmitted.

That’s why amplitude is the best indicator of how much energy a wave delivers. Frequency, wavelength, and speed describe how often the wave repeats, its spatial extent, and how fast it travels, but they don’t directly quantify the energy carried per unit time in the same straightforward way.