Physics for IGCSE & O level - Waves And Sounds (Section 4 - No. 10)
What happens to a wave's energy if its amplitude is doubled?
The energy doubles.
The energy quadruples.
The energy is halved.
The energy remains the same.
הֶסבֵּר
The energy is proportional to the square of the amplitude. If amplitude is doubled, the energy is quadrupled.