Answer: The correct answer is the amplitude doubled.
Explanation:
Amplitude is defined as the displacement of the wave from its mean position. It is the vertical distance between the peak (crest or trough) from the mean position.
From the two given graphs:
Graph 1: The amplitude of the graph is 1 unit.
Graph 2: The amplitude of the graph is 2 units.
Hence, from the above information, the amplitude of the wave has doubled from Wave A to Wave B.
Therefore, the correct answer is the amplitude doubled.
